from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A soft, silvery-white alkaline-earth metal, used to deoxidize copper and in various alloys. Atomic number 56; atomic weight 137.33; melting point 725°C; boiling point 1,140°C; specific gravity 3.50; valence 2. See Table at element.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A metallic chemical element (symbol Ba) with an atomic number of 56.
from the GNU version of the Collaborative International Dictionary of English
- n. One of the elements, belonging to the alkaline earth group; a metal having a silver-white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the facility with which it becomes oxidized in the air. Atomic weight, 137. Symbol, Ba. Its oxide called baryta.
from The Century Dictionary and Cyclopedia
- n. Chemical symbol, Ba; atomic weight, 137.1. A chemical element belonging to the group of metals whose oxids are the alkaline earths.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a soft silvery metallic element of the alkali earth group; found in barite
bar(yta) + -ium.(American Heritage® Dictionary of the English Language, Fourth Edition)
From baryta + -ium. (Wiktionary)