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|Noun||1.||chemical substance - material produced by or used in a reaction involving changes in atoms or molecules|
explosive - a chemical substance that undergoes a rapid chemical change (with the production of gas) on being heated or struck
material, stuff - the tangible substance that goes into the makeup of a physical object; "coal is a hard black material"; "wheat is the stuff they use to make bread"
reactant - a chemical substance that is present at the start of a chemical reaction
Alar, daminozide - a chemical sprayed on fruit trees to regulate their growth so the entire crop can be harvested at one time
carrier - an inactive substance that is a vehicle for a radioactive tracer of the same substance and that assists in its recovery after some chemical reaction
carbon tetrahalide - compounds composed of 1 carbon and 4 halogen molecules
congener - a minor chemical constituent that gives a wine or liquor its distinctive character
chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
soil conditioner - a chemical substance used to improve the structure of the soil and increase its porosity; "gypsum can be used as a soil conditioner"
fertiliser, fertilizer, plant food - any substance such as manure or a mixture of nitrates used to make soil more fertile
flux - a substance added to molten metals to bond with impurities that can then be readily removed
fumigant - a chemical substance used in fumigation
intermediate - a substance formed during a chemical process before the desired product is obtained
fraction - a component of a mixture that has been separated by a fractional process
larvicide - a chemical used to kill larval pests
pesticide - a chemical used to kill pests (as rodents or insects)
phytochemical - a chemical substance obtained from plants that is biologically active but not nutritive
product - a chemical substance formed as a result of a chemical reaction; "a product of lime and nitric acid"
restrainer - a chemical that is added to a photographic developer in order to retard development and reduce the amount of fog on a film
stabilizer - a chemical that is added to a solution or mixture or suspension to maintain it in a stable or unchanging state
softener - a substance added to another to make it less hard