| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024yt•ter•bi•um (i tûr′bē əm),USA pronunciation n. [Chem.]- Chemistrya rare metallic element found in gadolinite and forming compounds resembling those of yttrium. Symbol: Yb;
at. wt.: 173.04;
at. no.: 70;
sp. gr.: 6.96. Cf. rare-earth element.
- Neo-Latin; see ytterbia, -ium
- 1875–80
Collins Concise English Dictionary © HarperCollins Publishers:: ytterbium /ɪˈtɜːbɪəm/ n - a soft malleable silvery element of the lanthanide series of metals that occurs in monazite and is used to improve the mechanical properties of steel. Symbol: Yb; atomic no: 70; atomic wt: 173.04; valency: 2 or 3; relative density: 6.903 (alpha), 6.966 (beta); melting pt: 819°C; boiling pt: 1196°C
Etymology: 19th Century: New Latin; see ytterbia |