Find the word definition

Crossword clues for agglomerate

The Collaborative International Dictionary

Agglomerate \Ag*glom"er*ate\, Agglomerated \Ag*glom"er*a`ted\, a.

  1. Collected into a ball, heap, or mass.

  2. (Bot.) Collected into a rounded head of flowers.


Agglomerate \Ag*glom"er*ate\, v. i. To collect in a mass.


Agglomerate \Ag*glom"er*ate\, v. t. [imp. & p. p. Agglomerated; p. pr. & vb. n. Agglomerating.] [L. agglomeratus, p. p. of agglomerare; ad + glomerare to form into a ball. See Glomerate.] To wind or collect into a ball; hence, to gather into a mass or anything like a mass.

Where he builds the agglomerated pile.


Agglomerate \Ag*glom"er*ate\, n.

  1. A collection or mass.

  2. (Geol.) A mass of angular volcanic fragments united by heat; -- distinguished from conglomerate.

Douglas Harper's Etymology Dictionary

1680s, from Latin agglomeratus, past participle of agglomerare "to wind or add onto a ball," from ad- "to" (see ad-) + glomerare "wind up in a ball," from glomus (genitive glomeris) "ball of yarn," from PIE root *glem-. Related: Agglomerated; agglomerating.

  1. collected into a ball, heap, or mass n. 1 A collection or mass. 2 (context geology English) A mass of angular volcanic fragments united by heat; distinguished from '''conglomerate'''. 3 (context meteorology English) An ice cover of floe formed by the freezing together of various forms of ice. v

  2. To wind or collect into a ball; hence, to gather into a mass or anything like a mass.


adj. clustered together but not coherent; "an agglomerated flower head" [syn: agglomerated, agglomerative, clustered]


v. form into one cluster


Agglomerates (from the Latin 'agglomerare' meaning 'to form into a ball') are coarse accumulations of large blocks of volcanic material that contain at least 75% bombs. Volcanic bombs differ from volcanic blocks in that their shape records fluidal surfaces: they may, for example, have ropy, cauliform, scoriaceous, or folded, chilled margins and spindle, spatter, ribbon, ragged, or amoeboid shapes. Globular masses of lava may have been shot from the crater at a time when partly molten lava was exposed, and was frequently shattered by sudden outbursts of steam. These bombs were viscous at the moment of ejection and by rotation in the air acquired their shape. They are commonly in diameter, but specimens as large as have been observed. There is less variety in their composition at any one volcanic centre than in the case of the lithic blocks, and their composition indicates the type of magma being erupted.

Agglomerates are typically found near volcanic vents and within volcanic conduits, where they may be associated with pyroclastic or intrusive volcanic breccias. Older (pre-1970) publications, particularly in Scotland, referred to any coarse-grained volcaniclastic rock as 'agglomerate', which led to debris flow deposits, talus deposits and other types of breccia being mistaken for vents. Agglomerates are typically poorly sorted, may contain a fine ash or tuff matrix and vary from matrix to clast support. They may be monolithologic or heterolithic, and may contain some blocks of various igneous rocks. There are various differences between agglomerates and ordinary ash beds or tuffs. Agglomerates are coarser and less frequently well-bedded. Agglomerates can be non-welded or welded, such as coarse basaltic 'spatter'. They typically form proximally during Strombolian eruptions, and are common at strongly peralkaline volcanoes. Some large agglomerate deposits are deposited from pyroclastic density currents during explosive caldera-forming eruptions, such as at Santorini, Taal, and Campi Flegrei. They may be massive to crudely bedded, and can attain great thicknesses.

Crystalline masses of a different kind occur in some numbers in certain agglomerates. They consist of volcanic minerals very much the same as those formed in the lava, but exhibiting certain peculiarities which indicate that they have formed slowly under pressure at considerable depths. They bear a resemblance to plutonic igneous rocks, but are more correctly to be regarded as agglomerations of crystals formed within the liquid lava as it slowly rose towards the surface, and at a subsequent period cast out by violent steam explosions. The sanidinites of the Eifel belong to this group. At Vesuvius, Ascension, St Vincent and many other volcanoes, they form a considerable part of the coarser ash-beds. Their commonest minerals are olivine, anorthite, hornblende, augite, biotite and leucite.

Usage examples of "agglomerate".

It is an agglomerate made of pebbles and cement, the pebbles being elongated as if by pressure.

The stone, which from miles away looked like layers of some grand confection, was up close a complex agglomerate of many textures and embedded crystals.

On the contrary, modern research, as we saw it in the two preceding chapters, proves that since the very beginning of their prehistoric life men used to agglomerate into gentes, clans, or tribes, maintained by an idea of common descent and by worship of common ancestors.

We're going to agglomerate our forces on the pro-Mutie worlds of the Federation and hope that the Romaghins and Setessins do not discover that something is up before we can act.

All the carbon contained in these vegetables had agglomerated, and little by little coal was forming under the double influence of enormous pressure and the high temperature maintained by the internal fires, at this time so close to it.

It has agglomerated population, centralized the means of production, and has concentrated property in a few hands.

The language that they had made was unlike all others: slow, sonorous, agglomerated, repetitive, indeed longwinded.

These were the different micro-circuit networks - the agglomerates of tiny silicon chips.