| APOSTOLATES | • apostolates n. Plural of apostolate. • APOSTOLATE n. the office of an apostle. |
| ORTHOEPISTS | • orthoepists n. Plural of orthoepist. • orthoëpists n. Plural of orthoëpist. • ORTHOEPIST n. one who is skilled in orthoepy. |
| OSTEOPHYTES | • osteophytes n. Plural of osteophyte. • OSTEOPHYTE n. an abnormal bony outgrowth. |
| OSTEOPLASTY | • osteoplasty n. (Surgery) Surgery to repair, modify or graft bone or bony structures. • OSTEOPLASTY n. plastic surgery on bone. |
| OTOPLASTIES | • otoplasties n. Plural of otoplasty. • OTOPLASTY n. cosmetic surgery on the ears. |
| PESTOLOGIST | • pestologist n. One who studies pestology. • PESTOLOGIST n. one who studies pestology. |
| PHOTORESIST | • photoresist n. A light-sensitive film used in photolithography and photoengraving. • PHOTORESIST n. an organic material that polymerizes on exposure to ultraviolet light and in that form resists attack by acids and solvents. |
| 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. |
| POSTMORTEMS | • postmortems n. Plural of postmortem. • post-mortems n. Plural of post-mortem. • post␣mortems n. Plural of post mortem. |
| POSTTENSION | • posttension v. (Construction) To pour concrete first and then stretch the reinforcing strands within it by means of… • post-tension v. (Construction, engineering) To apply tension (to reinforcing tendons) after casting concrete. • POSTTENSION v. to apply tension to (reinforcing steel) after concrete has set. |
| 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. |
| PROTOSTOMES | • protostomes n. Plural of protostome. • PROTOSTOME n. a major group of bilateral metazoan animals, that includes mollusks and annelids. |
| SMOOTHPATES | • SMOOTHPATE n. (archaic) a bald person. |
| SOMATOTYPES | • somatotypes n. Plural of somatotype. • SOMATOTYPE v. to place with regard to somatotype. |
| STATOSCOPES | • statoscopes n. Plural of statoscope. • STATOSCOPE n. an instrument for measuring small changes in atmospheric pressure. |
| STETHOSCOPE | • stethoscope n. (Medicine) A medical instrument used for listening to sounds produced within the body. • stethoscope v. (Transitive) To auscultate, or examine, with a stethoscope. • STETHOSCOPE n. an instrument with which to listen to the sounds produced by the heart, lungs, etc. |
| STETHOSCOPY | • stethoscopy n. (Medicine) The diagnostic use of a stethoscope. • STETHOSCOPY n. examination with a stethoscope. |
| THEOSOPHIST | • theosophist n. An advocate of, or believer in theosophy. • THEOSOPHIST n. a believer in theosophy, immediate divine illumination or wisdom, also THEOSOPH, THEOSOPHER. |
| TOOTHPASTES | • toothpastes n. Plural of toothpaste. • TOOTHPASTE n. a paste for cleaning the teeth. |
| TORPEDOISTS | • torpedoists n. Plural of torpedoist. • TORPEDOIST n. one whose job is to fire torpedoes. |