plan·​chet ˈplan-chət How to pronounce planchet (audio)
: a metal disk to be stamped as a coin
: a small metal or plastic disk

Examples of planchet in a Sentence

Recent Examples on the Web GoBankingRates reported some Georgia quarters on the experimental planchets have sold for as much as $10,000. Leada Gore |, al, 12 June 2023

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Word History


diminutive of planch flat plate, from Middle French planche

First Known Use

1611, in the meaning defined at sense 1

Time Traveler
The first known use of planchet was in 1611

Dictionary Entries Near planchet

Cite this Entry

“Planchet.” Dictionary, Merriam-Webster, Accessed 14 Jul. 2024.

Medical Definition


plan·​chet ˈplan-chət How to pronounce planchet (audio)
: a small metal disk or plate on which a sample of radioactive material is placed (as for quantitative determination of its activity)
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