| DESULPHURED | • desulphured v. Simple past tense and past participle of desulphur. • DESULPHUR v. to remove sulphur from, also DESULFUR. |
| DISULPHURET | • disulphuret n. (Chemistry, obsolete) disulfide. • DISULPHURET n. (obsolete) a sulphide containing two atoms of sulphur to the molecule, also DISULFID, DISULFIDE, DISULPHIDE. |
| DISULPHURIC | • DISULPHURIC adj. pyrosulphuric. |
| DUPLICATURE | • duplicature n. A doubling; a fold, as of a membrane. • DUPLICATURE n. a doubling, anything doubled. |
| PULCHRITUDE | • pulchritude n. Physical beauty. • PULCHRITUDE n. beauty. |
| QUADRUPEDAL | • quadrupedal adj. Walking on four feet. • QUADRUPEDAL adj. having four feet. |
| QUADRUPLETS | • quadruplets n. Plural of quadruplet. • QUADRUPLET n. a combination of four of a kind. |
| QUADRUPLIES | • QUADRUPLY n. (Scots) a reply to a triply. |
| QUADRUPLING | • quadrupling v. Present participle of quadruple. • quadrupling n. An act of quadrupling. • QUADRUPLE v. to increase fourfold. |
| QUADRUPOLES | • quadrupoles n. Plural of quadrupole. • QUADRUPOLE n. a system composed of two dipoles of equal but oppositely directed moment. |
| SULPHURATED | • sulphurated adj. Alternative form of sulfurated. • sulphurated v. Simple past tense and past participle of sulphurate. • SULPHURATE v. to combine with sulphur, also SULFURATE. |
| SULPHURETED | • sulphureted adj. Alternative spelling of sulfuretted. • SULPHURET v. to treat with sulfur, also SULFURET. |
| SULPHURISED | • sulphurised v. Simple past tense and past participle of sulphurise. • SULPHURISE v. to combine or impregnate with sulphur, also SULFURISE, SULFURIZE, SULPHURIZE. |
| SULPHURIZED | • sulphurized v. Simple past tense and past participle of sulphurize. • SULPHURIZE v. to combine or impregnate with sulphur, also SULFURISE, SULFURIZE, SULPHURISE. |
| SUPERDELUXE | • superdeluxe adj. Very fine in quality; luxurious. • SUPERDELUXE adj. extra luxurious. |
| SUPERFLUIDS | • superfluids n. Plural of superfluid. • SUPERFLUID n. a superfluid substance. |
| UNDERSUPPLY | • undersupply v. To provide with insufficient supplies; to supply inadequately. • undersupply n. An inadequate supply. • UNDERSUPPLY v. to supply too little. |