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Tantalum

see synonyms of tantalum

Noun

1. atomic number 73, ta, tantalum

a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite

WordNet Lexical Database for English. Princeton University. 2010.

Tantalum

see synonyms of tantalum
noun
a hard greyish-white metallic element that occurs with niobium in tantalite and columbite: used in electrical capacitors in most circuit boards and in alloys to increase hardness and chemical resistance, esp in surgical instruments. Symbol: Ta; atomic no: 73; atomic wt: 180.9479; valency: 2, 3, 4, or 5; relative density: 16.654; melting pt: 3020°C; boiling pt: 5458±100°C

Collins English Dictionary. Copyright © HarperCollins Publishers

Tantalum

see synonyms of tantalum
noun
a hard, gray, ductile, corrosion-resistant, metallic chemical element found in various minerals and used in making nuclear reactors, chemical equipment, missiles, electronic components, etc.: symbol, Ta; at. no., 73
see the periodic table of elements in the Reference Supplement

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Tantalum

see synonyms of tantalum
n. Symbol Ta
A very hard, dense, gray metallic element that occurs chiefly in columbite-tantalite and is exceptionally resistant to chemical attack below 150°C. It is used to make electrolytic capacitors for portable electronic and computing devices; superalloys for aircraft, missile, and nuclear reactor parts; filaments; and surgical instruments. Atomic number 73; atomic weight 180.948; melting point 3,017°C; boiling point 5,458°C; specific gravity 16.4; valence 2, 3, 4, 5. See Periodic Table.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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