Biologically Active Substance
phytochemical Audio
phy·to·chem·i·cal [ fahy-tuh-kem-i-kuhl ]
Subclass of:
Biological Factors
Definitions related to phytochemicals:
  • A substance found in plants. Some phytochemicals may reduce the risk of cancer.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • The term 'phyto' originated from a Greek word meaning plant. Phytonutrients are certain organic components of plants, and these components are thought to promote human health. Fruits, vegetables, grains, legumes, nuts and teas are rich sources of phytonutrients. Unlike the traditional nutrients (protein, fat, vitamins, minerals), phytonutrients are not 'essential' for life, so some people prefer the term 'phytochemical'. (USDA Agricultural Research Service)
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • A broad range of biologically active compounds which occur naturally in plants having important medicinal and nutritional properties.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • Substances made by plants that have biological effects in the human body. Examples include isoflavones, lycopene, lutein, and zeaxanthin.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
Try this search on: Farlex, Merriam-Webster, Oxford Dictionary, or Wordnik

This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.