Dictionary

planchet

planchet

noun plan·chet \ˈplan-chət\

Definition of PLANCHET

1
:  a metal disk to be stamped as a coin
2
:  a small metal or plastic disk

Origin of PLANCHET

diminutive of planch flat plate, from Middle French planche
First Known Use: 1611

planchet

noun plan·chet \ˈplan-chət\   (Medical Dictionary)

Medical Definition of PLANCHET

:  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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