| 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. |
| 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. |
| PHOTOSTATING | • photostating v. Present participle of photostat. • PHOTOSTAT v. to make facsimiles by this means. |
| 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. |
| PHYTOTOMISTS | • phytotomists n. Plural of phytotomist. • PHYTOTOMIST n. a student of phytotomy. |
| POTSHOTTINGS | • POTSHOTTING n. the act of taking a potshot. |
| PROSTHETISTS | • prosthetists n. Plural of prosthetist. • PROSTHETIST n. one who makes prosthetics. |
| TOPSTITCHING | • topstitching v. Present participle of topstitch. • topstitching n. The use of the topstitch technique. • TOPSTITCH v. to make a line of stitches on the outside of a garment close to a seam. |
| TROTHPLIGHTS | • trothplights n. Plural of trothplight. • TROTHPLIGHT v. to betroth. |