Medicine/Medical. a small hammer with a soft rubber head or the like, used in percussion for diagnostic purposes.

1835–45; < Greek plêx(is) stroke, percussion + -or2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
plexor or plessor (ˈplɛksə)
med a small hammer with a rubber head for use in percussion of the chest and testing reflexes
[C19: from Greek plēxis a stroke, from plēssein to strike]
plessor or plessor
[C19: from Greek plēxis a stroke, from plēssein to strike]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

plexor plex·or (plěk'sər) or ples·sor (plěs'ər)
A small, usually rubber-headed hammer used alone or with a pleximeter in examination or diagnosis by percussion. Also called percussor.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Mesh optimization is critical in numerical simulations involving com-plexor evolving geometry.
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