germanium

[jer-mey-nee-uhm]
noun Chemistry.
a scarce, metallic, grayish-white element, normally tetravalent, used chiefly in transistors. Symbol: Ge; atomic weight: 72.59; atomic number: 32; specific gravity: 5.36 at 20°C.

Origin:
1885–90; German(y) + -ium

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World English Dictionary
germanium (dʒɜːˈmeɪnɪəm)
 
n
a brittle crystalline grey element that is a semiconducting metalloid, occurring principally in zinc ores and argyrodite: used in transistors, as a catalyst, and to strengthen and harden alloys. Symbol: Ge; atomic no: 32; atomic wt: 72.61; valency: 2 or 4; relative density: 5.323; melting pt: 938.35°C; boiling pt: 2834°C
 
[C19: New Latin, named after Germany]

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Medical Dictionary

germanium ger·ma·ni·um (jər-mā'nē-əm)
n.
Symbol Ge
A brittle crystalline gray-white metalloid element, used as a semiconductor and in certain optical glasses. Atomic number 32; atomic weight 72.61; melting point 938.25°C; boiling point 2,830°C; specific gravity 5.323 (at 25°C); valence 2, 4.

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Science Dictionary
germanium   (jər-mā'nē-əm)  Pronunciation Key 
Symbol Ge
A brittle, crystalline, grayish-white metalloid element that is found in coal, in zinc ores, and in several minerals. It is used as a semiconductor and in wide-angle lenses. Atomic number 32; atomic weight 72.59; melting point 937.4°C; boiling point 2,830°C; specific gravity 5.323 (at 25°C); valence 2, 4. See Periodic Table.
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Example sentences
But sensors made with germanium, another common semiconductor, can.
For example, pure germanium is an electrically inert substance.
It perfected methods of purifying germanium and silicon, and growing large
  crystals of these elements.
Because germanium is a heavier atom than silicon, its crystal-lattice structure
  is more widely spaced.
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