| ALTAZIMUTH | • altazimuth n. A telescope or surveying instrument that has a mount permitting both horizontal and vertical rotation. • alt-azimuth n. Alternative form of altazimuth. • ALTAZIMUTH n. an instrument for measuring the altitude and azimuth of heavenly bodies. |
| BLUETHROAT | • bluethroat n. A small Old World passerine bird, Luscinia svecica, the male in spring having a bright blue throat. • BLUETHROAT n. a singing bird of northern Europe and Asia, related to the nightingales. |
| DUATHLETES | • duathletes n. Plural of duathlete. • DUATHLETE n. someone who takes part in duathlons. |
| ETHAMBUTOL | • ethambutol n. (Pharmacology) A synthetic bacteriostatic antimycobacterial drug C10H24N2O2 that is a derivative of… • ETHAMBUTOL n. a drug used in the treatment of tuberculosis. |
| PENTATHLUM | • pentathlum n. Pentathlon. • PENTATHLUM n. a pentathlon. |
| SPATHULATE | • spathulate adj. Alternative spelling of spatulate. • SPATHULATE adj. spoon-shaped. |
| STEALTHFUL | • stealthful adj. (Obsolete) stealthy. • STEALTHFUL adj. stealthy. |
| THALICTRUM | • thalictrum n. (Botany) Any plant of the genus Thalictrum; meadowrue. • Thalictrum prop.n. A taxonomic genus within the family Ranunculaceae – the meadow rues. • THALICTRUM n. a plant of the meadow-rue genus. |
| THUMBSTALL | • thumbstall n. A utensil, consisting of a plate or boss with small depressions, used to push a needle by the action… • thumbstall n. A sheath, usually made of leather or rubber, used to guard or protect the thumb. • thumbstall n. A pad or cushion worn on the thumb; pouncer. |
| TURTLEHEAD | • turtlehead n. The white turtlehead, an American perennial herb (Chelone glabra) with white flowers. • turtlehead n. Any of various other members of the genus Chelone. • TURTLEHEAD n. an American perennial herb with white flowers shaped like the head of a turtle. |
| ULTRAHEATS | • ultraheats v. Third-person singular simple present indicative form of ultraheat. • ULTRAHEAT v. to heat to very high temperatures, as used for sterilisation. |
| ULTRALIGHT | • ultralight adj. Extremely light; weighing very little, of utmost lightness. • ultralight n. An aircraft that weighs very little. • ULTRALIGHT n. a very light aircraft. |
| ULTRARIGHT | • ultraright adj. (Politics) Extremely right-wing. • ultraright n. A person of extremely right-wing political beliefs. • ULTRARIGHT n. in politics, the far right. |
| ULTRASHORT | • ultrashort adj. Very short. • ultrashort adj. (Sciences) Extremely short in duration, typically on the femtosecond scale. • ultrashort adj. (Physics, of a wave) Having a wavelength of between 1 and 10 metres. |
| UNATHLETIC | • unathletic adj. Not athletic; lacking in athleticism. • UNATHLETIC adj. not athletic. |
| UNHITTABLE | • unhittable adj. Impossible to hit. |