1. A silvery-white, malleable, ductile, metallic rare-earth element obtained from monazite and bastnaesite and used in improving high-temperature characteristics of iron, chromium, and related alloys. atomic number 64; atomic weight 157.25; melting point 1,312°C; boiling point approximately 3,000°C; specific gravity from 7.8 to 7.896; valence 3. see table at element.

1. A metallic chemical element (symbol gd) with an atomic number of 64.

1. A rare earth metallic element of the lanthanide series, with a characteristic spectrum, found associated with yttrium and other rare earth elements. symbol, gd; it has an atomic number of 64, an atomic weight of 157.25 (C=12.011), and a valence of +3.

1. A supposed new element found with yttrium in gadolinite.
2. it belongs to the same family as yttrium. its oxid is white, and its salts are colorless: atomic weight about 156. it perhaps represents a mixture of more than a single element.

1. a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group