| APOSTROPHUS | • APOSTROPHUS n. (Greek) a symbol resembling a reversed letter C used in Roman numerals to denote large numbers. | 
| AUTOCROSSES | • autocrosses v. Third-person singular simple present indicative form of autocross. • AUTOCROSS n. motor racing round a rough grass track.
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| BRONTOSAURS | • brontosaurs n. Plural of brontosaur. • BRONTOSAUR n. any of a genus of large sauropod dinosaurs of the Jurassic, also BRONTOSAURUS.
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| COLOURCASTS | • colourcasts n. Plural of colourcast. • colourcasts v. Third-person singular simple present indicative form of colourcast.
 • COLOURCAST v. to broadcast (a television programme) in colour, also COLORCAST.
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| COTYLOSAURS | • cotylosaurs n. Plural of cotylosaur. • COTYLOSAUR n. an extinct primitive reptile with massive body and short legs.
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| ECTOSARCOUS | • ECTOSARCOUS adj. like ectosarc. | 
| OSTRACODOUS | • OSTRACODOUS adj. like an ostracod. | 
| OSTREACEOUS | • ostreaceous adj. (Zoology) Of or pertaining to an oyster, or to a shell. • OSTREACEOUS adj. of or relating to oysters.
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| POSTOCULARS | • postoculars n. Plural of postocular. • POSTOCULAR n. a scale situated behind the eye of some lizards.
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| POSTULATORS | • postulators n. Plural of postulator. • POSTULATOR n. an official who presents case for canonization or beatification.
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| ROUSEABOUTS | • rouseabouts n. Plural of rouseabout. • ROUSEABOUT n. (Australian) an odd-job man on a sheep station, also ROUSTABOUT.
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| ROUSTABOUTS | • roustabouts n. Plural of roustabout. • ROUSTABOUT n. a casual or unskilled laborer, esp. on an oil rig, also ROUSEABOUT.
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| SARCOMATOUS | • sarcomatous adj. (Medicine) Of or pertaining to sarcoma; resembling sarcoma. • SARCOMATOUS adj. of or like a sarcoma.
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| STAUROSCOPE | • stauroscope n. (Crystallography) An optical instrument used in determining the position of the planes of light-vibration… • STAUROSCOPE n. an instrument for studying the structure of crystals with polarised light.
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| TROPOPAUSES | • tropopauses n. Plural of tropopause. • TROPOPAUSE n. the level of the atmosphere where the troposphere ends and stratosphere begins.
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