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单词 meta-element
释义

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meta-element
meta-element n.
Brit. /ˈmɛtə(r)ˌɛlᵻm(ə)nt/
,
U.S. /ˈmɛdəˌɛləmənt/
Chemistry rare (now historical) (W. Crookes' name for) a chemical entity exhibiting slight variability in atomic weight and other properties, regarded as neither an ordinary element nor a compound (later recognized to be a mixture of elements).
ΚΠ
1886 W. Crookes in Chem. News 54 117Meta-element’ does not appear here (meso-element does).
1888 W. Crookes in Jrnl. Chem. Soc. 53 487 The possible existence of bodies which, though neither compounds nor mixtures, are not elements in the strictest sense of the word;—bodies which I venture to call ‘meta-elements’.
1935 Science 13 Sept. 236/1 He [sc. Crookes] called the components ‘meta-elements’, but unfortunately for his reputation as a prophet the experimental results on which his idea was founded were later proved to be fallacious.
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更新时间:2024/12/24 20:37:23