| ATTOMETERS | • attometers n. Plural of attometer. • ATTOMETER n. ten to the power of minus eighteen metres, also ATTOMETRE. |
| ATTOMETRES | • attometres n. Plural of attometre. • ATTOMETRE n. ten to the power of minus eighteen metres, also ATTOMETER. |
| BETTERMOST | • bettermost adj. (Colloquial) best, superior. • BETTERMOST adj. best. |
| NEUTRETTOS | • neutrettos n. Plural of neutretto. • NEUTRETTO n. a name suggested for a neutral meson; a type of neutrino. |
| OPERETTIST | • operettist n. The composer of an operetta. • OPERETTIST n. a composer of operettas. |
| OTTRELITES | • ottrelites n. Plural of ottrelite. • OTTRELITE n. a mineral like chlorite but harder. |
| PETROSTATE | • petrostate n. A state whose wealth stems from the sale of oil. • PETROSTATE n. a small oil-rich country in which institutions are weak and wealth and power are concentrated in the hands of the few. |
| SETTERWORT | • setterwort n. The bear’s-foot (Helleborus foetidus). • SETTERWORT n. the bear's-foot hellebore, so called because the root was used in settering, or inserting setons into the dewlaps of cattle. |
| STORIETTES | • storiettes n. Plural of storiette. • STORIETTE n. a short tale, also STORYETTE. |
| STORYETTES | • storyettes n. Plural of storyette. • STORYETTE n. a short tale, also STORIETTE. |
| TEETOTALER | • teetotaler n. (American spelling) A person who completely abstains from alcoholic beverages. • TEETOTALER n. one who does not drink alcohol, also TEETOTALIST, TEETOTALLER. |
| TETRAPTOTE | • tetraptote n. (Grammar) A noun that has four cases. • TETRAPTOTE n. a noun that has four grammatical cases only. |
| TINTOMETER | • tintometer n. Synonym of colorimeter. • TINTOMETER n. another name for colorimeter, an instrument for measuring and determining color. |
| TOTTERIEST | • totteriest adj. Superlative form of tottery: most tottery. • TOTTERY adj. shaky. |
| TRICOLETTE | • tricolette n. A knitted fabric of silk or rayon. • TRICOLETTE n. a silk or rayon knitted fabric. |