| chemical | | |
| n. (substance) | 1. chemical, 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. |
| ~ bacteriacide, bactericide | any chemical agent that destroys bacteria. |
| ~ 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. |
| ~ herbicide, weed killer, weedkiller | a chemical agent that destroys plants or inhibits their growth. |
| ~ 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. |
| adj. (pertain) | 2. chemic, chemical | relating to or used in chemistry.; "chemical engineer"; "chemical balance" |
| adj. (pertain) | 3. chemical | of or made from or using substances produced by or used in reactions involving atomic or molecular changes.; "chemical fertilizer" |
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