| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024sul•fur /ˈsʌlfɚ/USA pronunciation n. [uncountable]- ChemistryAlso,[esp. Brit.,] sulphur. a nonmetallic element, ordinarily a yellow solid that can be burned, occurring widely in chemically combined forms and compounds and in cellular protein, and used esp. in making gunpowder and matches, and in medicine.
- a greenish yellow color;
sulphur (def. 2).
WordReference Random House Unabridged Dictionary of American English © 2024sul•fur (sul′fər),USA pronunciation n. - ChemistryAlso,[esp. Brit.,] sulphur. a nonmetallic element that exists in several forms, the ordinary one being a yellow rhombic crystalline solid, and that burns with a blue flame and a suffocating odor: used esp. in making gunpowder and matches, in medicine, in vulcanizing rubber, etc. Symbol: S;
at. wt.: 32.064;
at. no.: 16;
sp. gr.: 2.07 at 20° C. - sulphur (def. 2).
- Latin sulpur, sulphur, sulfur brimstone, sulfur
- Middle English sulphur 1300–50
Collins Concise English Dictionary © HarperCollins Publishers:: sulfur /ˈsʌlfə/ n - the US preferred spelling of sulphur
sul•phur /ˈsʌlfɚ/USA pronunciation n. [uncountable]- Chemistry, British Terms[Chiefly Brit.]sulfur (def. 1).
- Also, sulfur. a greenish yellow.
WordReference Random House Unabridged Dictionary of American English © 2024sul•phur (sul′fər),USA pronunciation n. - Chemistry, British Terms[Chiefly Brit.]sulfur (def. 1).
- Also, sulfur. yellow with a greenish tinge;
lemon color.
Sul•phur (sul′fər),USA pronunciation n. - Place Namesa city in SW Louisiana. 19,709.
Collins Concise English Dictionary © HarperCollins Publishers:: sulphur, US sulfur /ˈsʌlfə/ n - an allotropic nonmetallic element, occurring free in volcanic regions and in combined state in gypsum, pyrite, and galena. The stable yellow rhombic form converts on heating to monoclinic needles. It is used in the production of sulphuric acid, in the vulcanization of rubber, and in fungicides. Symbol: S; atomic no: 16; atomic wt: 32.066; valency: 2, 4, or 6; relative density: 2.07 (rhombic), 1.957 (monoclinic); melting pt: 115.22°C (rhombic), 119.0°C (monoclinic); boiling pt: 444.674°C
- (as modifier): sulphur springs
Etymology: 14th Century soufre, from Old French, from Latin sulfursulphuric, US sulfuric /sʌlˈfjʊərɪk/ adj |