| AUTOROTATES | • autorotates v. Third-person singular simple present indicative form of autorotate. • AUTOROTATE v. to self-turn. |
| BITTERROOTS | • bitterroots n. Plural of bitterroot. • BITTERROOT n. a plant allied to the purslane, growing in the mountains of Idaho, Montana, etc. |
| CONSTITUTOR | • constitutor n. One who or that which constitutes something. • CONSTITUTOR n. someone or something that constitutes; a person who makes a constitution. |
| OPTOMETRIST | • optometrist n. A person trained and skilled in examining and testing the eyes for defects, in order to prescribe corrective… • OPTOMETRIST n. an ophthalmic optician; a person qualified to practise optometry. |
| ORTHOPTISTS | • orthoptists n. Plural of orthoptist. • ORTHOPTIST n. one who practises orthoptics, the science of correct vision. |
| ORTHOSTATIC | • orthostatic adj. Relating to orthostasis or orthostatism. • orthostatic adj. (Archaeology) Relating to an orthostat. • ORTHOSTATIC adj. pertaining to erect or standing position. |
| PHOTOSETTER | • photosetter n. A photocomposer; a machine for photosetting. • PHOTOSETTER n. an apparatus for photosetting. |
| PROSTITUTOR | • prostitutor n. A person who prostitutes him- or herself or another person. • prostitutor n. A person who prostitutes his or her abilities or talents. • PROSTITUTOR n. one who prostitutes. |
| PROTOCTISTS | • protoctists n. Plural of protoctist. • PROTOCTIST n. any unicellular or simple multicellular organism belonging to the kingdom Protoctista, which includes protozoans, algae, and slime moulds. |
| ROTTENSTONE | • rottenstone n. (Geology) A soft, friable limestone, used in polishes. • rottenstone v. (Transitive) To polish with rottenstone. • rotten␣stone n. Alternative form of rottenstone. |
| TETROTOXINS | • TETROTOXIN n. a deadly nerve poison found in a species of Japanese puffer fish, also TETRODOTOXIN. |
| THROATWORTS | • throatworts n. Plural of throatwort. • THROATWORT n. a plant formerly considered a remedy for sore throats because of its throat-shaped corolla. |
| TOTALISATOR | • totalisator n. (UK) the computerised system which runs parimutuel betting, calculating payoff odds, displaying them… • TOTALISATOR n. an automatic betting machine, also TOTALIZATOR. |
| TROCTOLITES | • troctolites n. Plural of troctolite. • TROCTOLITE n. a coarse-grained basic igneous rock composed of feldspar speckled with olivine, aka troutstone. |
| TROUTSTONES | • TROUTSTONE n. a coarse-grained basic igneous rock composed of feldspar speckled with olivine, aka troctolite. |