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alleged
Alleghenies
Allegheny
Allegheny Mountains
Allegheny Plateau
Allegheny spurge
allegiance
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allegorize
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allene
al·lene [ ál een ] (plural al·lenes)


noun 
Definition:
 
colorless unstable gas: a colorless unstable gas. Use: manufacture of chemicals. C3H4
[Late 19th century. Contraction of allylene, a gaseous hydrocarbon]
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