a combining form used in the formation of compound words that denote minerals with a particular cleavage, as specified by the initial element: oligoclase; plagioclase.

Origin of -clase

< French < Greek klásis; see -clasis
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British Dictionary definitions for -clase


n combining form

(in mineralogy) indicating a particular type of cleavageplagioclase

Word Origin for -clase

via French from Greek klasis a breaking, from klan to break
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