| BIOSATELLITES | • biosatellites n. Plural of biosatellite. • BIOSATELLITE n. an artificial satellite containing living organisms to be studied during flight. |
| CASTELLATIONS | • castellations n. Plural of castellation. • CASTELLATION n. the state of being castellated, having battlements or turrets. |
| COLLECTIVISTS | • collectivists n. Plural of collectivist. • COLLECTIVIST n. a supporter of collectivism. |
| DELTIOLOGISTS | • deltiologists n. Plural of deltiologist. • DELTIOLOGIST n. a collector of picture postcards. |
| MISALLOTMENTS | • misallotments n. Plural of misallotment. • MISALLOTMENT n. an instance of misallotting. |
| POINTILLISTES | • pointillistes n. Plural of pointilliste. • POINTILLISTE n. one who practises pointillisme, also POINTILLIST. |
| SCUTELLATIONS | • scutellations n. Plural of scutellation. • SCUTELLATION n. an arrangement of scales or plates on an animal's body. |
| SEPTILLIONTHS | • septillionths n. Plural of septillionth. • SEPTILLIONTH n. the ordinal of septillion. |
| SEXTILLIONTHS | • sextillionths n. Plural of sextillionth. • SEXTILLIONTH n. the ordinal of a sextillion, a thousand raised to the seventh power. |
| STILBOESTROLS | • stilboestrols n. Plural of stilboestrol. • STILBOESTROL n. a synthetic oestrogen, also STILBESTROL. |
| STORYTELLINGS | • storytellings n. Plural of storytelling. • STORYTELLING n. the craft of telling stories. |
| TESSELLATIONS | • tessellations n. Plural of tessellation. • TESSELLATION n. fitting together exactly; leaving no spaces. |
| THOUGHTLESSLY | • thoughtlessly adv. Done without thinking. • THOUGHTLESS adv. insufficiently alert. |
| TONSILLITIDES | • tonsillitides n. Plural of tonsillitis. • TONSILLITIS n. inflammation of the tonsils, also TONSILITIS. |
| TONSILLITISES | • TONSILLITIS n. inflammation of the tonsils, also TONSILITIS. |
| TORTICOLLISES | • TORTICOLLIS n. a condition in which the neck is permanently twisted and head held at an unusual angle. |
| TORTOISESHELL | • tortoiseshell n. The horny, translucent, mottled covering of the carapace of the hawksbill turtle, used as a veneer etc. • tortoiseshell n. The hawksbill turtle. • tortoiseshell n. A domestic cat (Or a rabbit, guinea-pig, etc.) whose fur has black, brown and yellow markings. |
| WOLLASTONITES | • wollastonites n. Plural of wollastonite. • WOLLASTONITE n. a metasilicate of calcium, usually occurring in white to grey fibrous tabular masses and used as a source of rock wool. |