| OPTOMETRISTS | • optometrists n. Plural of optometrist. • OPTOMETRIST n. an ophthalmic optician; a person qualified to practise optometry. |
| ORTHOPTERIST | • orthopterist n. An entomologist who specialises in orthopters. • ORTHOPTERIST n. a student of insects. |
| OSTEOPATHIST | • osteopathist n. An osteopath. • OSTEOPATHIST n. a practitioner of osteopathy, also OSTEOPATH. |
| PETITIONISTS | • petitionists n. Plural of petitionist. • PETITIONIST n. one who serves a petition. |
| PHOTOMETRIST | • photometrist n. A specialist in photometry. • PHOTOMETRIST n. one who practises photometry, that branch of science which treats of the measurement of the intensity of light. |
| PHOTOSETTERS | • photosetters n. Plural of photosetter. • PHOTOSETTER n. an apparatus for photosetting. |
| PHOTOSETTING | • photosetting v. Present participle of photoset. • PHOTOSETTING n. composing (matter) by projecting film from which a printing plate is made. |
| PHOTOSTATTED | • photostatted v. Simple past tense and past participle of photostat. • PHOTOSTAT v. to make facsimiles by this means. |
| PHOTOTYPESET | • phototypeset v. (Transitive) To typeset by a phototypesetting process. • PHOTOTYPESET v. to set (type matter) by phototypesetting. |
| POSTLITERATE | • postliterate adj. After the decline of literacy. • POSTLITERATE adj. relating to or occurring after the introduction of the electronic media. |
| POTENTIATORS | • potentiators n. Plural of potentiator. • POTENTIATOR n. one who potentiates. |
| PROSTHETISTS | • prosthetists n. Plural of prosthetist. • PROSTHETIST n. one who makes prosthetics. |
| PROTESTATION | • protestation n. A formal solemn objection or other declaration. • protestation n. (Law, historical) A declaration in common-law pleading, by which the party interposes an oblique allegation… • PROTESTATION n. an avowal or solemn declaration. |
| STENOTYPISTS | • stenotypists n. Plural of stenotypist. • STENOTYPIST n. one who types with a stenotype, also STENOTYPER. |
| STEREOTYPIST | • stereotypist n. One who makes stereotype plates, or works in a stereotype foundry. • STEREOTYPIST n. one who makes stereotypes. |
| STREPITATION | • STREPITATION n. a clamour. |
| TETRAPTEROUS | • tetrapterous adj. (Entomology) Having four (two pairs of) wings. • TETRAPTEROUS adj. having four wings, also TETRAPTERAN. |
| TRAINSPOTTER | • trainspotter n. A person whose hobby is train spotting. • trainspotter n. (By extension) An obsessive follower of any minority interest or hobby. • train␣spotter n. (Rail transport) a person whose hobby is train spotting. |
| TROPOSCATTER | • troposcatter n. Tropospheric scatter. • TROPOSCATTER n. the propagation of radio waves by using irregularities in the troposphere to scatter the signals beamed up by means of high-powered UHF transmitters and parabolic antennas. |