say it: KEM-uh-kuhl
chemical is an adjective and noun meaning "relating to or used in chemistry". It carries 3 recorded senses.
of or made from or using substances produced by or used in reactions involving atomic or molecular changes
“chemical fertilizer”
material produced by or used in a reaction involving changes in atoms or molecules
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for chemical come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.