| ASPHALTUMS | • asphaltums n. Plural of asphaltum. • ASPHALTUM n. (Greek) a mixture of bituminous pitch with sand etc. used for surfacing paths, roads, etc., also ASPHALT. |
| BISULPHATE | • bisulphate n. (Inorganic chemistry) Alternative spelling of bisulfate. • BISULPHATE n. a salt containing double the proportion of the acid radical present in a sulphate, also BISULFATE. |
| DISULPHATE | • disulphate n. (Chemistry) A salt or ester of disulphuric acid or pyrosulphuric acid; a pyrosulphate. • disulphate n. (Chemistry) An acid salt of sulphuric acid, having only one equivalent of base to two of the acid. • DISULPHATE n. a pyrosulphate. |
| HOURPLATES | • hourplates n. Plural of hourplate. • HOURPLATE n. a timepiece dial. |
| HOUSEPLANT | • houseplant n. A plant that is grown indoors in places such as a house or office for decorative purposes. • houseplant n. A variety of plant that is especially suited to such cultivation, or that is frequently grown in such settings. • house␣plant n. Alternative spelling of houseplant. |
| MULTIPHASE | • multiphase adj. That generates, or employs, multiple alternating current supplies with the same voltage but different phase angles. • MULTIPHASE adj. having many phases. |
| PATCHOULIS | • patchoulis n. Plural of patchouli. • PATCHOULI n. (Tamil) an Asiatic tree with a fragrant perfume oil; the resulting perfume, also PACHOULI, PATCHOULY. |
| POLYANTHUS | • polyanthus n. A type of primula, apparently originally from a hybrid between the cowslip and the primrose, having… • POLYANTHUS n. the oxlip, so called because the peduncle bears a many-flowered umbel. |
| POSTLAUNCH | • postlaunch adj. After a launch. • POSTLAUNCH adj. following a launch. |
| PROTHALLUS | • prothallus n. A prothallium. • PROTHALLUS n. the free-living gametophyte of a fern or other vascular cryptogam, also PROTHALLIUM. |
| SPATHULATE | • spathulate adj. Alternative spelling of spatulate. • SPATHULATE adj. spoon-shaped. |
| SULPHATASE | • sulphatase n. (Biochemistry) Alternative spelling of sulfatase. • SULPHATASE n. any of various esterases that accelerate the hydrolysis of sulfuric esters, also SULFATASE. |
| SULPHATING | • sulphating v. Present participle of sulphate. • SULPHATE v. to treat with sulfuric acid, also SULFATE. |
| SULPHATION | • sulphation n. Alternative spelling of sulfation. • SULPHATION n. the act of forming a sulphate, also SULFATION. |
| SULPHONATE | • sulphonate n. (British spelling, chemistry) Alternative spelling of sulfonate. • sulphonate v. (British spelling, chemistry) Alternative spelling of sulfonate. • SULPHONATE n. a salt of sulphonic acid. |
| SULPHURATE | • sulphurate v. Alternative spelling of sulfurate. • sulphurate adj. (Poetic, rare, obsolete) sulphurous. • SULPHURATE v. to combine with sulphur, also SULFURATE. |
| SULTANSHIP | • sultanship n. The office or status of a sultan. • SULTANSHIP n. the office or dignity of a sultan. |
| TRIUMPHALS | • triumphals n. Plural of triumphal. • TRIUMPHAL n. (Milton) a token of victory. |
| ULTRASHARP | • ultrasharp adj. Extremely or excessively sharp; rapier. • ULTRASHARP adj. very very sharp. |