| ACOLOUTHITE | • ACOLOUTHITE n. (obsolete) an acolyte. |
| ALTAZIMUTHS | • altazimuths n. Plural of altazimuth. • alt-azimuths n. Plural of alt-azimuth. • ALTAZIMUTH n. an instrument for measuring the altitude and azimuth of heavenly bodies. |
| AUTHENTICAL | • authentical adj. (Archaic) Authentic. • AUTHENTICAL adj. (archaic) authentic. |
| BLUETHROATS | • bluethroats n. Plural of bluethroat. • BLUETHROAT n. a singing bird of northern Europe and Asia, related to the nightingales. |
| ETHAMBUTOLS | • ETHAMBUTOL n. a drug used in the treatment of tuberculosis. |
| GLUTATHIONE | • glutathione n. (Biochemistry) A tripeptide formed from glutamic acid, cysteine and glycine, that is active in many… • GLUTATHIONE n. an antioxidant, found in the body's airways and nose, that protects the lungs from the effects of pollutants. |
| HAUSTELLATE | • haustellate adj. (Zoology) Provided with a haustellum, or sucking proboscis. • haustellate n. (Zoology) One of the Haustellata. • HAUSTELLATE adj. having a haustellum, a proboscis, as a fly. |
| MULTIAUTHOR | • multiauthor adj. Written by more than one author. • MULTIAUTHOR adj. having many authors. |
| PENTATHLUMS | • PENTATHLUM n. a pentathlon. |
| THALICTRUMS | • thalictrums n. Plural of thalictrum. • THALICTRUM n. a plant of the meadow-rue genus. |
| THIOSULFATE | • thiosulfate n. (Chemistry) any salt or ester of thiosulfuric acid. • THIOSULFATE n. any salt of thiosulphuric acid, also THIOSULPHATE. |
| THUMBSTALLS | • thumbstalls n. Plural of thumbstall. • THUMBSTALL n. a covering or sheath for the thumb. |
| TURTLEHEADS | • turtleheads n. Plural of turtlehead. • TURTLEHEAD n. an American perennial herb with white flowers shaped like the head of a turtle. |
| ULTRABRIGHT | • ultrabright adj. Very bright. |
| ULTRAHEATED | • ultraheated v. Simple past tense and past participle of ultraheat. • ULTRAHEAT v. to heat to very high temperatures, as used for sterilisation. |
| ULTRALIGHTS | • ultralights n. Plural of ultralight. • ULTRALIGHT n. a very light aircraft. |
| ULTRARIGHTS | • ultrarights n. Plural of ultraright. • ULTRARIGHT n. in politics, the far right. |
| ULTRASMOOTH | • ultrasmooth adj. Very smooth. • ULTRASMOOTH adj. very very smooth. |