chem·i·cal /ˈkɛmɪkəl/
  (a.)化學的化學製品,化學藥品
  chem·i·cal /ˈkɛmɪkəl/ 形容詞
  化學的化學藥品
  chemical
  化學
  Chem·ic·al a. Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations.
  Chemical attraction or Chemical affinity. See under Attraction.
  Chem·ic·al, n. A substance used for producing a chemical effect; a reagent.
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  chemical
       adj 1: relating to or used in chemistry; "chemical engineer";
              "chemical balance" [syn: chemic]
       2: of or made from or using substances produced by or used in
          reactions involving atomic or molecular changes; "chemical
          fertilizer"
       n : produced by or used in a reaction involving changes in atoms
           or molecules