a disk of metal to be stamped as a coin
Origin of planchetFrench planchette, diminutive of planche, plank
- A flat disk of metal ready for stamping as a coin; a coin blank.
- A small shallow metal container in which a radioactive substance is deposited for measurement of its activity.
Origin of planchetDiminutive of planch, flat plate, slab, from Middle English plaunche, plank, from Old French planche, from Late Latin planca, from feminine of Latin plancus, flat; see plak-1 in Indo-European roots.