| 单词 | chemical symbol |
| 释义 | > as lemmaschemical symbol chemical symbol n. a letter or other graphic mark used as an abbreviation in chemistry; spec. a letter or two (rarely three) letters denoting a chemical element (as N for nitrogen, Fe for iron) or an organic group (as R for an alkyl group, Me for methyl), in chemical formulae or in other contexts. ΚΠ 1799 G. Pearson Transl. Table Chem. Nomencl. (ed. 2) (title page) To which are subjoined, tables of single elective attraction, tables of chemical symbols, [etc.]. 1853 A. Ure Dict. Arts (ed. 4) I. 1 Acetal, is the subacetate of ether, having for its chemical symbol 3 Ac O + Ac O3. 1952 J. A. Steers et al. Lake's Physical Geogr. (ed. 3) iii. iii. 261 His first shell is the granitic, which he called Sial,..being made up of Si (silicon) and Al (aluminium), the chemical symbols of the two commonest elements in this layer. 2001 O. Sacks Uncle Tungsten iv. 40 Tungsten was sometimes called wolfram, and still retained the chemical symbol W. < as lemmas |
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