n. A nonnutritive bioactive plant substance, such as a flavonoid or carotenoid, considered to have a beneficial effect on human health. Also called phytonutrient. phy'to·chem'i·cal·ly adv.
Main Entry: 1phy·to·chem·i·cal Pronunciation: -'kem-i-k&l Function: adjective : of, relating to, or beingphytochemistry —phy·to·chem·i·cal·ly/-i-k(&-)lE/adverb
Main Entry: 2phytochemical Function: noun : a chemical compound (as beta-carotene or isothiocyanate) occurring naturally in plants