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单词 wolfram
释义

wolfram


wolf·ram

W0201900 (wo͝ol′frəm)n. See tungsten.
[German Wolfram, wolframite, tungsten, from earlier, a mineral (possibly wolframite) with a sooty appearance that when present in tin ore made the extraction of tin more difficult : Wolf, wolf (because the mineral seemed to eat up tin as a wolf eats a sheep) (from Middle High German, from Old High German; see wl̥kwo- in Indo-European roots) + -ram (from Middle High German rām, soot).]

wolfram

(ˈwʊlfrəm) n (Elements & Compounds) another name for tungsten[C18: from German, originally perhaps from the proper name, Wolfram, used pejoratively of tungsten because it was thought inferior to tin]

tung•sten

(ˈtʌŋ stən)

n. a rare, bright gray, lustrous metallic element having a high melting point, 3410°C: used in electric-lamp filaments. Symbol: W; at. wt.: 183.85; at. no.: 74; sp. gr.: 19.3. Also called wolfram. [1760–70; < Swedish, =tung heavy + sten stone] tung•sten′ic (-ˈstɛn ɪk) adj.

wolf·ram

(wo͝ol′frəm) See tungsten.
Thesaurus
Noun1.wolfram - a heavy grey-white metallic elementwolfram - a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheeliteatomic number 74, tungsten, Wmetal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.scheelite - a mineral used as an ore of tungsteniron manganese tungsten, wolframite - a mineral consisting of iron and manganese tungstate in crystalline form; the principal ore of tungsten; found in quartz veins associated with granitic rocks
Translations
Wolframtungstenowolframiotungstène

wolfram


wolfram:

see tungstentungsten
[Swed.,=heavy stone], metallic chemical element; symbol W; at. no. 74; at. wt. 183.84; m.p. about 3,410&degC;; b.p. 5,660&degC;; sp. gr. 19.3 at 20&degC;; valence +2, +3, +4, +5, or +6.
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wolfram

[′wu̇l·frəm] (chemistry) tungsten (mineralogy) wolframite

wolfram


tung·sten (W),

(tŭng'stĕn), A metallic element, atomic no. 74, atomic wt. 183.85. Synonym(s): wolfram, wolframium [Swed. tung, heavy, + sten, stone]

wolfram

(1) Tungsten. 
(2) Wolframite, an ore containing iron tungstate and magnesium tungstate. 
(3) Any ore containing tungsten.

tung·sten

(W) (tŭng'stĕn) A metallic element, atomic no. 74, atomic wt. 183.85.
Synonym(s): wolfram, wolframium.
[Swed. tung, heavy, + sten, stone]
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