(abbreviation chem.)

relating to chemistry, or the interactions of substances as studied in chemistry:

〖名詞の前で〗化学(上)の, 化学的な; 化学用の; 化学的に作られた; 化学薬品の［による］

e.g. the chemical composition of the atmosphere.

relating to chemicals:

e.g. chemical treatments for killing fungi.

relating to, involving, or denoting the use of poison gas or other chemicals as weapons of war:

e.g. the manufacture of chemical weapons.

a compound or substance that has been purified or prepared, especially artificially:

〖通例～s〗 化学薬品［製品］; 化学物質

e.g. never mix disinfectant with other chemicals

e.g. controversy arose over treatment of apples with this chemical.

late 16th century: from French chimique or modern Latin chimicus, chymicus, from medieval Latin alchymicus, from alchimia (see alchemy).