| PHOTOSENSOR | • photosensor n. A photodetector. • PHOTOSENSOR n. a detector that is sensitive to electromagnetic radiation. |
| PHOTOSETTER | • photosetter n. A photocomposer; a machine for photosetting. • PHOTOSETTER n. an apparatus for photosetting. |
| PHOTOSHOOTS | • photoshoots n. Plural of photoshoot. • photo␣shoots n. Plural of photo shoot. • PHOTOSHOOT n. a session in which a photographer takes pictures of a celebrity, etc. |
| PHOTOSPHERE | • photosphere n. (Astronomy) A visible surface layer of a star, and especially that of a sun. • PHOTOSPHERE n. the sun's luminous envelope. |
| PHOTOSTATED | • photostated v. Simple past tense and past participle of photostat. • PHOTOSTAT v. to make facsimiles by this means. |
| PHOTOSTATIC | • photostatic adj. Relating to xerography. • photostatic adj. (Biochemistry) Relating to photostasis. • PHOTOSTATIC adj. of, made by, or using a photostat. |
| PHOTOSYSTEM | • photosystem n. (Biochemistry) Either of two biochemical systems, active in chloroplasts, that are part of photosynthesis. • PHOTOSYSTEM n. either of two photochemical reaction centers consisting chiefly of photosynthetic pigments complexed with protein and occurring in chloroplasts. |
| PROTOSTELES | • protosteles n. Plural of protostele. • PROTOSTELE n. a stele in which the vascular tissue forms a solid core, with centrally placed xylem surrounded by phloem. |
| PROTOSTELIC | • protostelic adj. Of or possessing a protostele. • PROTOSTELIC adj. of or like a protostele. |
| PROTOSTOMES | • protostomes n. Plural of protostome. • PROTOSTOME n. a major group of bilateral metazoan animals, that includes mollusks and annelids. |
| RADIOPHOTOS | • radiophotos n. Plural of radiophoto. • RADIOPHOTO n. a picture transmitted by radio. |
| ROTOSCOPING | • rotoscoping n. Synonym of rotoscope (“technique”). • rotoscoping v. Present participle of rotoscope. • ROTOSCOPE v. to create the outline of an object from live-action film for manipulation in an animated film sequence. |