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[tahy-tey-nee-uh m] /taɪˈteɪ ni əm/
noun, Chemistry.
a dark-gray or silvery, lustrous, very hard, light, corrosion-resistant, metallic element, occurring combined in various minerals: used in metallurgy to remove oxygen and nitrogen from steel and to toughen it. Symbol: Ti; atomic weight: 47.90; atomic number: 22; specific gravity: 4.5 at 20°C.
Origin of titanium
< New Latin (1795); see Titan, -ium Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for titanium
Contemporary Examples
Historical Examples
  • A lamp-filament of titanium and zirconium with electric lamps or with alloys?

    The Classification of Patents United States Patent Office
  • Disks of plastic or titanium or something, stamped and uncounterfeitable.

    Space Viking Henry Beam Piper
  • Lastly we get the compounds of titanium and carbon, and the densely shaded spectra which tell of the thickly gathering vapours.

    The Story of Evolution Joseph McCabe
  • The residuum may be examined for silica, lime, barytes, and oxide of titanium.

  • titanium, a rare, very hard metal, always found in combination.

    The Nuttall Encyclopaedia Edited by Rev. James Wood
  • The arc-flame is large and the titanium gives it a high brilliancy.

    Artificial Light M. Luckiesh
British Dictionary definitions for titanium


a strong malleable white metallic element, which is very corrosion-resistant and occurs in rutile and ilmenite. It is used in the manufacture of strong lightweight alloys, esp aircraft parts. Symbol: Ti; atomic no: 22; atomic wt: 47.88; valency: 2, 3, or 4; relative density: 4.54; melting pt: 1670±10°C; boiling pt: 3289°C
Word Origin
C18: New Latin; see Titan, -ium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for titanium

metallic element, 1796, Modern Latin, named in 1795 by German chemist and mineralogist Martin Heinrich Klaproth (1743-1817) from Latin Titan (see titan) as "sons of the earth." He had previously named uranium.

Online Etymology Dictionary, © 2010 Douglas Harper
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titanium in Medicine

titanium ti·ta·ni·um (tī-tā'nē-əm, tĭ-)
Symbol Ti
A strong, low-density, highly corrosion-resistant metallic element that occurs widely in igneous rocks. Atomic number 22; atomic weight 47.88; melting point 1,668°C; boiling point 3,287°C; specific gravity 4.54; valence 2, 3, 4.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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titanium in Science
Symbol Ti
A shiny, white metallic element that occurs in all kinds of rocks and soils. It is lightweight, strong, and highly resistant to corrosion. Titanium alloys are used especially to make parts for aircraft and ships. Atomic number 22; atomic weight 47.87; melting point 1,660°C; boiling point 3,287°C; specific gravity 4.54; valence 2, 3, 4. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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