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Longman Dictionary of Contemporary English
preservative
noun
COLLOCATIONS FROM OTHER ENTRIES
artificial preservatives (=used to preserve food)
▪ This jam has no artificial preservatives.
COLLOCATIONS FROM CORPUS
■ ADJECTIVE
artificial
▪ Full of fruit with no artificial preservatives or colourings, they taste just like home-made jam.
▪ Throw them out over Akron or Denver, who needs the artificial flavors and preservatives?
▪ No artificial colouring or preservatives used.
▪ Some manufacturers are now producing juices with no artificial preservatives or added sugar - delicious and lower in calories too.
■ NOUN
wood
▪ Apply a wood preservative that can be painted over or varnished afterwards.
▪ Attach the post anchors to the posts, making sure the post bottoms are cut square and treated with extra wood preservative.
▪ Make sure they are treated with a wood preservative before nailing or screwing to the frame.
EXAMPLES FROM CORPUS
▪ Apply a wood preservative that can be painted over or varnished afterwards.
▪ Her secret, she said, is all the preservatives in the junk foods she eats.
▪ It acts as a glucose preservative by inhibiting glycolysis.
▪ Paper cartons of milk and tomatoes, packaged without preservatives or additives, just like their steel counterparts, are already here.
▪ The demand for food without preservatives is increasing.
▪ The Growtray is a simple timber box, that is treated with non-toxic preservatives.
▪ The herrings and preservative had reacted together and produced a chemical which was poisonous to mink.
▪ Throw them out over Akron or Denver, who needs the artificial flavors and preservatives?
The Collaborative International Dictionary
Preservative

Preservative \Pre*serv"a*tive\, a. [Cf. F. pr['e]servatif.] Having the power or quality of preserving; tending to preserve, or to keep from injury, decay, etc.

Preservative

Preservative \Pre*serv"a*tive\, n. That which preserves, or has the power of preserving; a presevative agent.

To wear tablets as preservatives against the plague.
--Bacon.

Douglas Harper's Etymology Dictionary
preservative

late 14c., from Old French preservatif and directly from Medieval Latin praeservativus, from stem of praeservare (see preserve (v.)). The noun is from early 15c., "a preservative medication;" sense of "chemical added to foods to keep them from rotting" is from 1875.

Wiktionary
preservative

a. tending to preserve n. (countable) any agent, natural or artificial that acts to preserve, especially when added to food

WordNet
preservative
  1. adj. tending or having the power to preserve; "the timbers should be treated with a preservative"

  2. n. a chemical compound that is added to protect against decay or decomposition

Wikipedia
Preservative

A preservative is a substance or a chemical that is added to products such as food, beverages, pharmaceutical drugs, paints, biological samples, cosmetics, wood, and many other products to prevent decomposition by microbial growth or by undesirable chemical changes. In general, preservation is implemented in two modes, chemical and physical. Chemical preservation entails adding chemical compounds to the product.Physical preservation entails processes such as refrigeration or drying. Preservative food additives reduce the risk of foodborne infections, decrease microbial spoilage, and preserve fresh attributes and nutritional quality. Some physical techniques for food preservation include dehydration, UV-C radiation, freeze-drying, and refrigeration. Chemical preservation and physical preservation techniques are sometimes combined.

Usage examples of "preservative".

The ease with which he could have strangled her, throttled the smugness swimming in accusatory preservative behind her goggle glasses.

The preservatives mostly used are the bisulphites of lime and potash, and these, when employed in small quantities, are generally held to be harmless.

The preservative in part replaces the alcohol and the hop extract, and shortens the brewing time.

And in case he be so sequestred, then though he afterwards die not, the House wherein he sickened shall be shut up for a Moneth, after the use of due Preservatives taken by the rest.

In other words, whereas the former acts were, in general, preservative of the commerce which they regulated because of its value to society, the latter regard the commerce which they reach as detrimental to society.

Nut butters, made from ground almonds, hazelnuts, pistachios, or other nuts, and found in health food stores, do not carry the added sugars or preservatives of commercially sold and processed butters, such as peanut butter.

The trunks contained field space suits, battery packs, rubber gloves, surgical scrub suits, syringes, needles, drugs, dissection tools, flashlights, one or two human surgery packs, blunt scissors, sample bags, plastic bottles, pickling preservatives, biohazard bags marked with red flowers, and hand-pumped garden sprayers for spraying beach on space suits and objects that needed to be decontaminated.

Algernon Charles Swinburne, and calcium disodium, an allegedly natural preservative.

Arian pestilence approached their frontiers, they were supplied with the seasonable preservative of the Homoousion, by the paternal care of the Roman pontiff.

For regarding Believe-on-Me they said it was nought else but notion and they could conceive no thought of it for, first, Two-in-the-Bush whither she ticed them was the very goodliest grot and in it were four pillows on which were four tickets with these words printed on them, Pickaback and Topsyturvy and Shameface and Cheek by Jowl and, second, for that foul plague Allpox and the monsters they cared not for them for Preservative had given them a stout shield of oxengut and, third, that they might take no hurt neither from Offspring that was that wicked devil by virtue of this same shield which was named Killchild.

Kallet went on to indict the purveyors of ground meat for their rampant use of preservative chemicals, such as sodium sulfite, citing a study that found sulfite in seventy-one of the seventy-six hamburgers sampled.

Deon Cash liked coconut cream pie and that Jane Warr was allergic to sulfites used as a preservative.

The outer layer consisted of eighteen steel wires wound spirally, each being covered with a wrapping of hemp impregnated with a preservative solution.

Bonnet, President of the Royal Society of Medicine of Bordeaux, had occasion to observe many soldiers during the Peninsular War, who made use of Cinchona as a preservative against different diseases, but he never found it to produce the pretended paroxysms.

He and Philipa were more than self-sufficient in food, most of it grown and canned with their own hands, and none of it was adulterated with dyes, preservatives, or fillers.