Yttrium

['ɪtrɪəm]

解释:

(noun.) a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys.

亚瑟校对--From WordNet

解释:

(n.) A rare metallic element of the boron-aluminium group, found in gadolinite and other rare minerals, and extracted as a dark gray powder. Symbol Y. Atomic weight, 89.

校对:史蒂文

解释:

n. a rare metal obtained as a blackish-gray powder and contained in a few minerals in which there are usually also present compounds of one or more other rare metals such as cerium didymium erbium and lanthanum.—n. Ytt′ria its oxide a yellowish-white powder.—adjs. Ytt′ric; Yttrif′erous; Ytt′rious.—ns. Ytt′ro-cē′rite a violet mineral found embedded in quartz a fluoride of yttrium cerium and calcium; Ytt′ro-col′umbite -tan′talite a brownish mineral found at Ytterby a tantalate of yttrium uranium and iron with calcium.

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