tantalum

(redirected from Tantalium)
Also found in: Thesaurus, Medical, Encyclopedia.

tan·ta·lum

 (tăn′tə-ləm)
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.

[New Latin, from Latin Tantalus, Tantalus (from its high resistance to absorbing acids even when immersed in them); see Tantalus.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tantalum

(ˈtæntələm)
n
(Elements & Compounds) 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
[C19: named after Tantalus, with reference to the metal's incapacity to absorb acids]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tan•ta•lum

(ˈtæn tl əm)

n.
a hard, gray, rare metallic element that resists corrosion by most acids: used for chemical, dental, and surgical instruments. Symbol: Ta; at. wt.: 180.948; at. no.: 73; sp. gr.: 16.6.
[< Swedish (1802); after Tantalus, alluding to the nonabsorption of acids]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

tan·ta·lum

(tăn′tə-ləm)
Symbol Ta A hard, heavy, gray metallic element that is highly resistant to corrosion at lower temperatures. It is used to make light-bulb filaments, surgical instruments, and glass for camera lenses. Atomic number 73. See Periodic Table.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tantalum - a hard grey lustrous metallic element that is highly resistant to corrosiontantalum - a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
fergusonite - a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals
columbite, niobite - a black mineral that is an ore of niobium and tantalum
tantalite - a mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite; an ore of tantalum
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
тантал
tantal
tantal
tantalo
tantaal
tantaali
tantal
tantál
tantal
タンタル
tantalas
tantaaltantalium
tantal
tantal
tantal
tantal
tantal
tantal
tantal
тантал
tantalitantan

tantalum

n tantalio
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?