English Dictionary: scandium | by the DICT Development Group |
4 results for scandium | |
From WordNet (r) 3.0 (2006) [wn]: | |
| |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Scandium \Scan"di*um\, n. [NL. So called because found in Scandinavian minerals.] (Chem.) A rare metallic element of the boron group, whose existence was predicted under the provisional name {ekaboron} by means of the periodic law, and subsequently discovered by spectrum analysis in certain rare Scandinavian minerals (euxenite and gadolinite). It has not yet been isolated. Symbol Sc. Atomic weight 44. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Ekabor \Ek"a*bor`\ ([ecr]k"[adot]*b[omac]r`), Ekaboron \Ek"a*bo"ron\ (-b[omac]"r[ocr]n), n. [G., fr. Skr. [emac]ka one + G. bor, boron, E. boron.] (Chem.) The name given by Mendelejeff in accordance with the periodic law, and by prediction, to a hypothetical element then unknown, but since discovered and named {scandium}; -- so called because it was a missing analogue of the boron group. See {Scandium}. | |
From The Elements (22Oct97) [elements]: | |
scandium Symbol: Sc Atomic number: 21 Atomic weight: 44.956 Rare soft silvery metallic element belonging to group 3 of the periodic table. There are ten isotopes, nine of which are radioactive and have short half-lives. Predicted in 1869 by Mendeleev, isolated by Nilson in 1879. |