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titanium ti·ta·ni·um (tī-tā'nē-əm, tĭ-)
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.
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.