Meaning of CHEMICAL in English
■ adjective relating to chemistry or ~s.
↘relating to or denoting the use of poison gas or other ~s as weapons of war.
■ noun a distinct compound or substance, especially one which has been artificially prepared or purified.
↘an addictive drug.
C16: from Fr. chimique or mod. L. chimicus , chymicus , from med. L. alchymicus , from alchimia (see alchemy ).
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004