| DIAPHOTOTROPY | • DIAPHOTOTROPY n. the state of being diaphototropic, turning transversely to the light. |
| IONTOPHORETIC | • iontophoretic adj. Of or pertaining to iontophoresis. • IONTOPHORETIC adj. relating to iontophoresis. |
| ORTHOPTEROIDS | • orthopteroids n. Plural of orthopteroid. • ORTHOPTEROID n. a member of the Orthoptera, cockroaches. |
| ORTHOTROPISMS | • ORTHOTROPISM n. vertical growth. |
| PHOTODETECTOR | • photodetector n. Any device used to detect electromagnetic radiation. • PHOTODETECTOR n. any of various devices for detecting and measuring the intensity of radiant energy through photoelectric action. |
| PHOTOELECTRON | • photoelectron n. (Physics) An electron ejected from the surface of a material by the photoelectric effect. • PHOTOELECTRON n. an electron released from a surface by a photon. |
| PHOTONEUTRONS | • photoneutrons n. Plural of photoneutron. • PHOTONEUTRON n. a neutron emitted from a nucleus as a result of photodisintegration. |
| PHOTOPRODUCTS | • photoproducts n. Plural of photoproduct. • PHOTOPRODUCT n. a product of a photochemical reaction. |
| PHOTOREACTION | • photoreaction n. (Chemistry) a photochemical reaction. • PHOTOREACTION n. a photochemical reaction. |
| PHOTORECEPTOR | • photoreceptor n. (Biology) A specialized neuron or other structure able to detect and react to light. • PHOTORECEPTOR n. a receptor for light stimuli. |
| PHOTOTROPISMS | • phototropisms n. Plural of phototropism. • PHOTOTROPISM n. movement directed by light. |
| PROSTHODONTIA | • PROSTHODONTIA n. the provision of false teeth, also PROSTHODONTICS. |
| PROTOCHORDATE | • protochordate n. Any chordate of the phyla Hemichordata, Urochordata or Cephalochordata. • PROTOCHORDATE n. a member of the Protochordata. |
| PROTOHISTORIC | • protohistoric adj. Of or pertaining to protohistory. • PROTOHISTORIC adj. relating to protohistory. |
| PROTOTROPHIES | • prototrophies n. Plural of prototrophy. • PROTOTROPHY n. the state of being prototrophic. |
| SOMATOTROPHIC | • somatotrophic adj. That stimulates body growth, especially by producing somatotrophin. • SOMATOTROPHIC adj. promoting bodily growth, also SOMATOTROPIC. |
| SOMATOTROPHIN | • somatotrophin n. Alternative spelling of somatotropin. • SOMATOTROPHIN n. a polypeptide growth hormone, also SOMATOTROPIN, SOMATOTROPINE. |
| TROPHOTROPISM | • trophotropism n. The movements of the organs in a growing plant, as towards nutrient substances, induced by the chemical… • TROPHOTROPISM n. direction of growth by nutritional factors. |