| HOMOEOPATHIST | • homoeopathist n. Alternative form of homeopathist. • homœopathist n. Obsolete form of homeopathist. • HOMOEOPATHIST n. one who practises homoeopathy, also HOMEOPATH, HOMEOPATHIST, HOMOEOPATH. |
| 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. |
| PHOTOCATHODES | • photocathodes n. Plural of photocathode. • PHOTOCATHODE n. a cathode that emits electrons when exposed to radiant energy and esp. light. |
| 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. |
| PHOTOMONTAGES | • photomontages n. Plural of photomontage. • PHOTOMONTAGE n. montage using photographic images. |
| PHOTONEUTRONS | • photoneutrons n. Plural of photoneutron. • PHOTONEUTRON n. a neutron emitted from a nucleus as a result of photodisintegration. |
| PHOTOPOSITIVE | • photopositive adj. (Biology) having a positive phototropic or phototactic response; attracted by light. • PHOTOPOSITIVE adj. exhibiting positive phototropism or phototaxis. |
| 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. |
| PROTOCHORDATE | • protochordate n. Any chordate of the phyla Hemichordata, Urochordata or Cephalochordata. • PROTOCHORDATE n. a member of the Protochordata. |
| PROTOTROPHIES | • prototrophies n. Plural of prototrophy. • PROTOTROPHY n. the state of being prototrophic. |