| LOPHOPHORATE | • lophophorate adj. (Zoology) Having a lophophore. • lophophorate n. (Zoology) A member of the Lophophorata, a clade of invertebrate animals. • LOPHOPHORATE adj. of or like a lophophore, a ring of ciliated tentacles round the mouth of some sedentary marine animals. |
| MORPHOTROPIC | • morphotropic adj. (Crystallography) Of or pertaining to morphotropism. • morphotropic adj. Describing a phase transition due to a change in composition. • morphotropic adj. Describing the phase boundary between tetragonal and rhombohedral regions of a ferroelectric. |
| PHOTOCOPIERS | • photocopiers n. Plural of photocopier. • PHOTOCOPIER n. a machine for copying. |
| PHOTOPERIODS | • photoperiods n. Plural of photoperiod. • PHOTOPERIOD n. the period during every 24 hours when an organism is exposed to daylight. |
| PHOTOPOLYMER | • photopolymer n. (Chemistry) Any polymer that reacts to light with a physical or chemical change, used especially for teeth fillings. • PHOTOPOLYMER n. a photosensitive plastic used esp. in the manufacture of printing plates. |
| PHOTOPRODUCT | • photoproduct n. (Chemistry) Any product of a photochemical reaction. • PHOTOPRODUCT n. a product of a photochemical reaction. |
| 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. |
| POSTWORKSHOP | • postworkshop adj. After a workshop (educational course or conference). • POSTWORKSHOP adj. taking place after a workshop. |
| PROPHETHOODS | • prophethoods n. Plural of prophethood. • PROPHETHOOD n. the state of being a prophet. |
| PROTOMORPHIC | • protomorphic adj. (Biology) Having the most primitive character; in the earliest form. • PROTOMORPHIC adj. primordial; primitive. |
| PROTOPHLOEMS | • protophloems n. Plural of protophloem. • PROTOPHLOEM n. the first-formed phloem that develops from procambium, usually associated with a region of rapid growth. |
| PROTOTROPHIC | • prototrophic adj. (Biology) Of or pertaining to a prototroph or to prototrophy. • PROTOTROPHIC adj. of bacteria, feeding directly on uncombined elements. |
| PYTHONOMORPH | • pythonomorph n. Any large extinct reptile of the taxon Pythonomorpha. • pythonomorph n. Any member of the taxon Pythonomorpha. • PYTHONOMORPH n. a large marine reptile of the Cretaceous period, with long, scaly body and paddle-shaped limbs. |
| TROPHOTROPIC | • trophotropic adj. Relating to trophotropy. • TROPHOTROPIC adj. related to trophotropism, direction of growth by nutritional factors. |
| TROPOPHILOUS | • tropophilous adj. (Biology) Adapted to seasonal changes. • TROPOPHILOUS adj. flourishing in seasonal extremes of climate. |