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be·ryl·li·um
Audio Help [buh-ril-ee-uh
m] Pronunciation Key
Audio Help [buh-ril-ee-uh
m] Pronunciation Key –noun Chemistry.
| a steel-gray, bivalent, hard, light, metallic element, the salts of which are sweet: used chiefly in copper alloys for better fatigue endurance, in springs, and in electrical contacts. Symbol: Be; atomic weight: 9.0122; atomic number: 4; specific gravity: 1.8 at 20° C. |
| Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
beryllium
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| © 2008 Encyclopædia Britannica, Inc. |
| be·ryl·li·um
Audio Help (bə-rĭl'ē-əm) Pronunciation Key
n. Symbol Be A high-melting, lightweight, corrosion-resistant, rigid, steel-gray metallic element used as an aerospace structural material, as a moderator and reflector in nuclear reactors, and in a copper alloy used for springs, electrical contacts, and nonsparking tools. Atomic number 4; atomic weight 9.0122; melting point 1,278°C; boiling point 2,970°C; specific gravity 1.848; valence 2. See Table at element. [From beryl.] |
| The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2006 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
| beryllium | |
noun | |
| a light strong brittle grey toxic bivalent metallic element |
| WordNet® 3.0, © 2006 by Princeton University. |
| beryllium
Audio Help (bə-rĭl'ē-əm) Pronunciation Key
Symbol Be A hard, lightweight, steel-gray metallic element of the alkaline-earth group, found in various minerals, especially beryl. It has a high melting point and is corrosion-resistant. Beryllium is used to make sturdy, lightweight alloys and aerospace structural materials. It is also used as a neutron moderator in nuclear reactors. Atomic number 4; atomic weight 9.0122; melting point 1,278°C; boiling point 2,970°C; specific gravity 1.848; valence 2. See Periodic Table. |
| The American Heritage® Science Dictionary Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
Beryllium
Be*ryl"li*um\, n. [NL.] (Chem.) A metallic element found in the beryl. See Glucinum.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
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