semiochemicalPronunciation: /ˌsiːmɪə(ʊ)ˈkɛmɪk(ə)l/Definition of semiochemical noun Biochemistry a pheromone or other chemical that conveys a signal from one organism to another so as to modify the behaviour of the recipient organism. Origin: 1970s: from Greek ēmeion 'sign' + chemicalsemiochemical in other Oxford dictionaries Definition of semiochemical in the US English dictionary
