químico
chemist
chemical
relating to chemistry
+
-ico
adjective or noun suffix
Químico means chemist and can be thought of as chemical0 + -ico1 (adjective or noun suffix1), literally meaning 'a person related to chemicals'.
noun
  1. chemist
    A person who specializes in chemistry
    El químico realizó un experimento en el laboratorio. // The chemist conducted an experiment in the laboratory.
adjective
  1. chemical
    Related to or involving chemistry
    La reacción química fue inesperada. // The chemical reaction was unexpected.