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Longman Dictionary of Contemporary English
▪ From the combined results Thomas's group estimated an average particle size of 100 for the copper metal aggregates.
▪ From this point of view society is an aggregate of such activities; social order is negotiated order.
▪ In quite dreadful weather conditions Cook put together rounds of 75-80-71-69 for an aggregate of 295.
▪ It imposed fines totalling £328,500 on 105 solicitors, compared with 76 solicitors fined an aggregate of £216,000 the year before.
▪ The above studies have attempted to assess the presence of circulating platelet aggregates.
▪ The business population Businesses constitute the second major aggregate of the private sector.
▪ They lost one-nil at Swansea last night, but qualify three-one on aggregate.
▪ Water-based Stronghold smooth, and Stronghold textured masonry paint, reinforced with rock aggregate for extra durability.
▪ The aggregate amount paid out under these schemes may be limited to an amount specified in the regulations.
▪ The model on which this claim is based has been extensively tested in the United States using aggregate data.
▪ Previous research into the response of domestic energy expenditure to changing prices has concentrated almost entirely on the use of aggregate data.
▪ The extension of the method to aggregate data on nation states will certainly follow, but will involve more complicated techniques.
▪ What are the determinants of aggregate demand?
▪ Condition 1 Equilibrium in the goods market requires that aggregate demand should equal national income.
▪ What is the relationship between money supply and aggregate demand?
▪ How responsive is it to changes in aggregate demand?
▪ And he measures the unpredictability of aggregate demand in the ith country by the variance of.
▪ Changes in money supply affect aggregate demand in three stages: 1.
▪ With a steep L curve and a shallow I curve, the effect on aggregate demand will be much greater.
▪ Thus if it is aggregate demand that requires controlling, monetary policy is a poor weapon to do this.
▪ In contrast the epidemiologist views the surgeon's patients at the aggregate level as clusters of variables.
▪ The effect of these changes on port performance is difficult to determine - at least at the aggregate level.
▪ In this chapter, we have outlined the main theories which seek to explain the aggregate levels of consumption and investment.
▪ This means that average and aggregate levels of measured consumption must equal permanent consumption.
▪ Inpart it is directed at particular features of the standard treatment - notably the assumption of an aggregate production function.
▪ The lower left-hand graph is the short-run aggregate production function and the lower right-hand graph illustrates the economy's labour market.
▪ In the extreme case where the aggregate supply curve is vertical, the increased money supply will simply lead to higher prices.
▪ The aggregate supply curve slope can be explained along rational expectations lines due to misperceptions of prices.
▪ Nevertheless there is one area in which the Keynesian model leaves much to be desired in its treatment of aggregate supply.
▪ Conventional econometric models typically treat aggregate supply only scantily.
▪ The other part of the debate focuses on aggregate supply.
▪ What is the shape of the aggregate supply curve?
▪ What are the determinants of aggregate supply?
▪ Can the government influence aggregate supply, and how?
aggregate income and investment
▪ And at that level of implementation, the aggregate benefits to the enterprise start to become very apparent.
▪ But the important thing is the aggregate evidence, which is very conclusive.
▪ But what happens to the real wage rate following a fall in aggregate demand?
▪ Electronics accounted for 21 percent of aggregate manufacturing employment in 1991, against only 7 percent in 1981.
▪ It thus tackles head on the problem of excess or deficient aggregate demand.
▪ Nevertheless there is one area in which the Keynesian model leaves much to be desired in its treatment of aggregate supply.
▪ What are the determinants of aggregate supply?
▪ When they go on sick leave, their aggregate take-home pay is actually higher than when they are on the job.
▪ Sheila's earnings from all sources aggregated $100,000.
▪ We made estimates using the aggregated data.
▪ Additionally, for the last five years a history is kept aggregating the number of days absence by type of absence.
▪ Both power and wealth aggregate within the affluent class.
▪ Figures such as these are not particularly meaningful because the information is highly aggregated.
▪ Individual scores were then aggregated to derive shift, department, division, and plant totals.
▪ The data were then aggregated for the calendar year 1991. 2.
▪ They aggregate the demands of citizens and communicate these to government officials.
▪ This hierarchy provides the framework upon which textual units are dynamically aggregated to satisfy varying user requirements.
The Collaborative International Dictionary

Aggregate \Ag"gre*gate\, n.

  1. A mass, assemblage, or sum of particulars; as, a house is an aggregate of stone, brick, timber, etc.

    Note: In an aggregate the particulars are less intimately mixed than in a compound.

  2. (Physics) A mass formed by the union of homogeneous particles; -- in distinction from a compound, formed by the union of heterogeneous particles.

    In the aggregate, collectively; together.


Aggregate \Ag"gre*gate\, v. t. [imp. & p. p. Aggregated; p. pr. & vb. n. Aggregating.] [L. aggregatus, p. p. of aggregare to lead to a flock or herd; ad + gregare to collect into a flock, grex flock, herd. See Gregarious.]

  1. To bring together; to collect into a mass or sum. ``The aggregated soil.''

  2. To add or unite, as, a person, to an association.

    It is many times hard to discern to which of the two sorts, the good or the bad, a man ought to be aggregated.

  3. To amount in the aggregate to; as, ten loads, aggregating five hundred bushels. [Colloq.]

    Syn: To heap up; accumulate; pile; collect.


Aggregate \Ag"gre*gate\, a. [L. aggregatus, p. p.]

  1. Formed by a collection of particulars into a whole mass or sum; collective.

    The aggregate testimony of many hundreds.
    --Sir T. Browne.

  2. (Anat.) Formed into clusters or groups of lobules; as, aggregate glands.

  3. (Bot.) Composed of several florets within a common involucre, as in the daisy; or of several carpels formed from one flower, as in the raspberry.

  4. (Min. & Geol.) Having the several component parts adherent to each other only to such a degree as to be separable by mechanical means.

  5. (Zo["o]l.) United into a common organized mass; -- said of certain compound animals.

    Corporation aggregate. (Law) See under Corporation.

Douglas Harper's Etymology Dictionary

c.1400, from Latin aggregatus "associated," literally "united in a flock," past participle of aggregare "add to (a flock), lead to a flock, bring together (in a flock)," from ad- "to" (see ad-) + gregare "herd" (see gregarious).


c.1400, from Latin aggregatum, neuter past participle of aggregare (see aggregate (adj.)). Related: Aggregated; aggregating.


"number of persons, things, etc., regarded as a unit," early 15c., from noun use of Latin adjective aggregatum, neuter of aggregatus (see aggregate (adj.)).

  1. 1 Formed by a collection of particulars into a whole mass or sum; collective; combined; added up 2 Consisting or formed of smaller objects or parts. 3 Formed into clusters or groups of lobules. 4 (context botany English) Composed of several florets within a common involucre, as in the daisy; or of several carpels formed from one flower, as in the raspberry. 5 Having the several component parts adherent to each other only to such a degree as to be separable by mechanical means. 6 United into a common organized mass; said of certain compound animals. n. 1 A mass, assemblage, or sum of particulars; something consisting of elements but considered as a whole.(rfex) 2 A mass formed by the union of homogeneous particles; – in distinction from a compound, formed by the union of heterogeneous particles.(rfex) 3 (context mathematics obsolete English) A set (gloss: collection of objects). 4 (context music English) The full chromatic scale of twelve equal tempered pitches. 5 (context roofing English) Crushed stone, crushed slag or water-worn gravel used for surfacing a built-up roof system. 6 Solid particles of low aspect ratio added to a composite material, as distinguished from the matrix and any fibers or reinforcements, especially the gravel and sand added to concrete. (technical) 7 (context Buddhism English) Any of the five attribute that constitute the sentient being. v

  2. 1 (context transitive English) To bring together; to collect into a mass or sum. 2 (context transitive English) To add or unite, as, a person, to an association. 3 (context transitive English) To amount in the aggregate to.

  1. n. a sum total of many heterogenous things taken together [syn: congeries, conglomeration]

  2. the whole amount [syn: sum, total, totality]

  3. v. amount in the aggregate to

  4. gather in a mass, sum, or whole [syn: combine]

  1. adj. gathered or tending to gather into a mass or whole; "aggregate expenses include expenses of all divisions combined for the entire year"; "the aggregated amount of indebtedness" [syn: aggregated, aggregative, mass]

  2. formed of separate units in a cluster; "raspberries are aggregate fruits"


Aggregate may refer to:

Aggregate (composite)

Aggregate is the component of a composite material that resists compressive stress and provides bulk to the composite material. For efficient filling, aggregate should be much smaller than the finished item, but have a wide variety of sizes. For example, the particles of stone used to make concrete typically include both sand and gravel.

Aggregate (data warehouse)

Aggregates are used in dimensional models of the data warehouse to produce dramatic positive effects on the time it takes to query large sets of data. At the simplest form an aggregate is a simple summary table that can be derived by performing a Group by SQL query. A more common use of aggregates is to take a dimension and change the granularity of this dimension. When changing the granularity of the dimension the fact table has to be partially summarized to fit the new grain of the new dimension, thus creating new dimensional and fact tables, fitting this new level of grain. Aggregates are sometimes referred to as pre-calculated summary data, since aggregations are usually precomputed, partially summarized data, that are stored in new aggregated tables. When facts are aggregated, it is either done by eliminating dimensionality or by associating the facts with a rolled up dimension. Rolled up dimensions should be shrunken versions of the dimensions associated with the granular base facts. This way, the aggregated dimension tables should conform to the base dimension tables. So the reason why aggregates can make such a dramatic increase in the performance of the data warehouse is the reduction of the number of rows to be accessed when responding to a query.

Ralph Kimball, who is widely regarded as one of the original architects of data warehousing, says:

The single most dramatic way to affect performance in a large data warehouse is to provide a proper set of aggregate (summary) records that coexist with the primary base records. Aggregates can have a very significant effect on performance, in some cases speeding queries by a factor of one hundred or even one thousand. No other means exist to harvest such spectacular gains.

Having aggregates and atomic data increases the complexity of the dimensional model. This complexity should be transparent to the users of the data warehouse, thus when a request is made, the data warehouse should return data from the table with the correct grain. So when requests to the data warehouse are made, aggregate navigator functionality should be implemented, to help determine the correct table with the correct grain. The number of possible aggregations is determined by every possible combination of dimension granularities. Since it would produce a lot of overhead to build all possible aggregations, it is a good idea to choose a subset of tables on which to make aggregations. The best way to choose this subset and decide which aggregations to build is to monitor queries and design aggregations to match query patterns.

Usage examples of "aggregate".

After a leaf had been left in a weak infusion of raw meat for 10 hours, the cells of the papillae had evidently absorbed animal matter, for instead of limpid fluid they now contained small aggregated masses of protoplasm, which slowly and incessantly changed their forms.

Aggregate admeasurement of six Aggregate admeasurement of six dug up and replanted.

Structure of the leaves--Sensitiveness of the filaments--Rapid movement of the lobes caused by irritation of the filaments--Glands, their power of secretion--Slow movement caused by the absorption of animal matter--Evidence of absorption from the aggregated condition of the glands--Digestive power of the secretion--Action of chloroform, ether, and hydrocyanic acid--The manner in which insects are captured--Use of the marginal spikes--Kinds of insects captured--The transmission of the motor impulse and mechanism of the movements--Reexpansion of the lobes.

A similar result followed from an immersion of only 15 minutes in a solution of one part of carbonate of ammonia to 218 of water, and the adjoining cells of the tentacles, on which the papillae were seated, now likewise contained aggregated masses of protoplasm.

The little masses of aggregated matter are of the most diversified shapes, often spherical or oval, sometimes much elongated, or quite irregular with thread or necklacelike or clubformed projections.

Diagram of the same cell of a tentacle, showing the various forms successively assumed by the aggregated masses of protoplasm.

Raw meat is too powerful a stimulant, and even small bits generally injure, and sometimes kill, the leaves to which they are given: the aggregated masses of protoplasm become dingy or almost colourless, and present an unusual granular appearance, as is likewise the case with leaves which have been immersed in a very strong solution of carbonate of ammonia.

A leaf placed in milk had the contents of its cells somewhat aggregated in 1 hr.

In old leaves, however, especially in those which have been several times in action, the protoplasm in the uppermost cells of the pedicels remains in a permanently more or less aggregated condition.

A leaf with aggregated masses, caused by its having been waved for 2 m.

We have seen that leaves immersed for some hours in dense solutions of sugar, gum, and starch, have the contents of their cells greatly aggregated, and are rendered more or less flaccid, with the tentacles irregularly contorted.

These leaves, after being left for four days in distilled water, became less flaccid, with their tentacles partially reexpanded, and the aggregated masses of protoplasm were partially redissolved.

The aggregated masses, however they may have been developed, incessantly change their forms and positions.

As soon as the tentacles fully reexpand, the aggregated masses are redissolved, and the cells become filled with homogeneous purple fluid, as they were at first.

A very strong solution of this salt and rather large bits of raw meat prevent the aggregated masses being well developed.