a surgical instrument for scraping bones.

< Neo-Latin < Greek xystḗr scraping tool, equivalent to xys- (stem of xýein to scrape) + -tēr instrumental noun suffix

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World English Dictionary
xyster (ˈzɪstə)
a surgical instrument for scraping bone; surgical rasp or file
[C17: via New Latin from Greek: tool for scraping, from xuein to scrape, make smooth]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

"surgical instrument for scraping bones," 1684, from Gk. xyster, from xyein "to scrape," from PIE base *kes- "to scrape."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

xyster xys·ter (zĭs'tər)
A surgical instrument for scraping bones.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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