Dictionary    Maps    Thesaurus    Translate    Advanced >   


Tip: Click Thesaurus above for synonyms. Also, follow synonym links within the dictionary to find definitions from other sources.

1. WordNet® 3.0 (2006)
tantalum
    n 1: a hard grey lustrous metallic element that is highly
         resistant to corrosion; occurs in niobite and fergusonite
         and tantalite [syn: tantalum, Ta, atomic number 73]

2. The Collaborative International Dictionary of English v.0.48
Tantalum \Tan"ta*lum\, n. [NL. So named on account of the
   perplexity and difficulty encounterd by its discoverer
   (Ekeberg) in isolating it. See Tantalus.] (Chem.)
   A rare nonmetallic element found in certain minerals, as
   tantalite, samarskite, and fergusonite, and isolated as a
   dark powder which becomes steel-gray by burnishing. Symbol
   Ta. Atomic weight 182.0. Formerly called also tantalium.
   [1913 Webster]

3. The Elements (07Nov00)
tantalum
Symbol: Ta
Atomic number: 73
Atomic weight: 180.948
Heavy blue-grey metallic transition element. Ta-181 is a stable isotope,
and Ta-180 is a radioactive isotope, with a half-life in excess of 10^7
years. Used in surgery as it is unreactive. Forms a passive oxide layer
in
air. Identified in 1802 by Ekeberg and isolated in 1820 by Jons J.
Berzelius.


Common Misspellings >
Most Popular Searches: Define Misanthrope, Define Pulchritudinous, Define Happy, Define Veracity, Define Cornucopia, Define Almuerzo, Define Atresic, Define URL, Definitions Of Words, Definition Of Get Up, Definition Of Quid Pro Quo, Definition Of Irreconcilable Differences, Definition Of Word, Synonyms of Repetitive, Synonym Dictionary, Synonym Antonyms. See our main index and map index for more details.

©2011-2024 ZebraWords.com - Define Yourself - The Search for Meanings and Meaning Means I Mean. All content subject to terms and conditions as set out here. Contact Us, peruse our Privacy Policy