| a. | 1. | Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry;
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| n. | 1. | A substance used for producing a chemical effect; a reagent. | |||
| Noun | 1. | chemical - produced by or used in a reaction involving changes in atoms or molecules |
| Adj. | 1. | chemical - relating to or used in chemistry; "chemical engineer"; "chemical balance" Synonyms: chemic |
| 2. | chemical - of or made from or using substances produced by or used in reactions involving atomic or molecular changes; "chemical fertilizer" |