| CRYPTOPHYTES | • cryptophytes n. Plural of cryptophyte. • CRYPTOPHYTE n. any perennial plant that bears its buds below the soil or water surface. |
| CRYPTOPHYTIC | • cryptophytic adj. Relating to or composed of cryptophytes. • CRYPTOPHYTIC adj. like a cryptophyte, a perennial plant that bears its buds below the soil or water surface. |
| HAPTOTROPISM | • haptotropism n. (Biology) The movement of parts of a plant (especially tendrils) in response to a touch stimulus. • HAPTOTROPISM n. curving in response to touch, as a tendril. |
| PHOTOPRODUCT | • photoproduct n. (Chemistry) Any product of a photochemical reaction. • PHOTOPRODUCT n. a product of a photochemical reaction. |
| PHOTOTHERAPY | • phototherapy n. The use of light to treat disorders of the skin, and certain mood disorders. • PHOTOTHERAPY n. the treatment of disease by light. |
| PHOTOTROPHIC | • phototrophic adj. (Biology) That exhibits phototrophy. • PHOTOTROPHIC adj. relating to phototropism, movement directed by light. |
| PHOTOTROPIES | • PHOTOTROPY n. change of colour due to wavelength of incident light. |
| PHOTOTROPISM | • phototropism n. (Biology) The movement of a plant towards or away from light. • PHOTOTROPISM n. movement directed by light. |
| PHREATOPHYTE | • phreatophyte n. (Biology) Any plant, typically living in deserts, that obtains its water from long taproots that reach… • PHREATOPHYTE n. a plant with a deep root system that draws its water supply from near the water table. |
| PHYTOTHERAPY | • phytotherapy n. (Medicine) The use of plant extracts for medical purposes. • PHYTOTHERAPY n. the treatment of the diseases of plants. |
| PROTOPATHIES | • PROTOPATHY n. first or direct experience. |
| PROTOTROPHIC | • prototrophic adj. (Biology) Of or pertaining to a prototroph or to prototrophy. • PROTOTROPHIC adj. of bacteria, feeding directly on uncombined elements. |
| PTERIDOPHYTE | • pteridophyte n. Any plant of the division Pteridophyta, of simple vascular plants that reproduce via spores rather than… • PTERIDOPHYTE n. the general name for the ferns and their allies. |
| TRIPHOSPHATE | • triphosphate n. (Chemistry) Any salt or ester containing three phosphate groups. • triphosphate n. (Chemistry) Any salt or ester of triphosphoric acid. • TRIPHOSPHATE n. a salt or acid that contains three phosphate groups. |
| TROPHOTROPIC | • trophotropic adj. Relating to trophotropy. • TROPHOTROPIC adj. related to trophotropism, direction of growth by nutritional factors. |
| TRYPTOPHANES | • tryptophanes n. Plural of tryptophane. • TRYPTOPHANE n. an essential amino acid, also TRYPTOPHAN. |
| TYPOGRAPHIST | • typographist n. A typographer. • TYPOGRAPHIST n. one who does typography. |