[fahy-tuh-krohm] /ˈfaɪ təˌkroʊm/
a plant pigment that is associated with the absorption of light in the photoperiodic response and that may regulate various types of growth and development.
(botany) a blue-green pigment existing in two interchangeable forms, present in most plants, that mediates many light-dependent processes, including photoperiodism and the greening of leaves
Any of a group of cytoplasmic pigments found in green plants and some green algae that absorb red light and regulate dormancy, seed germination, and flowering. Phytochromes consist of a bile pigment attached to a protein, and occur in an active and inactive form, each of which can be converted into the other depending on the wavelength of red light that is absorbed.
[fahy-tuh-sahyd] /ˈfaɪ təˌsaɪd/ noun 1. a substance or preparation for killing plants. noun the killing of plants; an agent that kills or injures plants
[fahy-toh-klahy-mit] /ˌfaɪ toʊˈklaɪ mɪt/ noun 1. See under . [mahy-kruh-klahy-mit] /ˈmaɪ krəˌklaɪ mɪt/ noun 1. the of a small area, as of confined spaces such as caves or houses (cryptoclimate) of plant communities, wooded areas, etc. (phytoclimate) or of urban communities, which may be different from that in the general region. /ˈmaɪkrəʊˌklaɪmɪt/ noun (ecology) 1. […]
[fahy-toh-see-noh-sis] /ˌfaɪ toʊ siˈnoʊ sɪs/ noun, plural phytocoenoses [fahy-toh-see-noh-seez] /ˌfaɪ toʊ siˈnoʊ siz/ (Show IPA) 1. the plants of a given area considered as a whole.
phytodermatitis phy·to·der·ma·ti·tis (fī’tō-dûr’mə-tī’tĭs) n. Dermatitis caused by various mechanisms including mechanical and chemical injury, allergy, or photosensitization at skin sites previously exposed to plants.