planchet

noun plan·chet \ˈplan-chət\

Definition of PLANCHET

: a metal disk to be stamped as a coin

: a small metal or plastic disk

diminutive of planch flat plate, from Middle French planche

First Known Use: 1611

Medical Dictionary

noun plan·chet \ˈplan-chət\

: a small metal disk or plate on which a sample of radioactive material is placed (as for quantitative determination of its reactivity)

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