| planchet | A small, flat plate or dish used to support a sample for radioactivity determination; the sample is usually evaporated on (in) the planchet. Origin: Fr. Planchette, dim. Of planche, plank (05 Mar 2000) |
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| planchette | 1. A circumferentor. See Circumferentor. 2. A small tablet of wood supported on casters and having a pencil attached. The characters produced by the pencil on paper, while the hand rests on the instrument and it is allowed to move, are sometimes translated as of oracular or supernatural import. Origin: F. See Planchet. Source: Websters Dictionary (01 Mar 1998) |