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adamantine

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adamantine

Main Entry:: ad·a·man·tine
Pronunciation:: \ˌa-də-ˈman-ˌtēn, -ˌtīn, -ˈman-t^ən\
Function:: adjective
Etymology:: Middle English, from Latin adamantinus, from Greek adamantinos, from adamant-, adamas
Date:: 13th century

1 : made of or having the quality of adamant 2 : rigidly firm : unyielding <adamantine discipline> 3 : resembling the diamond in hardness or luster

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