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discoid

[dis-koid] /ˈdɪs kɔɪd/
adjective, Also, discoidal
1.
having the form of a discus or disk; flat and circular.
2.
Botany. (of a composite flower) consisting of a disk only, without rays.
noun
3.
something in the form of a disk.
4.
Dentistry. an excavator with a disklike blade.
Origin
1785-1795
1785-95; < Late Latin discoīdēs < Greek diskoeidḗs quoit-shaped. See discus, -oid
Related forms
postdiscoidal, adjective
subdiscoid, adjective
subdiscoidal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for discoidal

discoid

/ˈdɪskɔɪd/
adjective
1.
like a disc
2.
(of a composite flower such as the tansy) consisting of disc florets only
noun
3.
a disclike object
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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discoidal in Medicine

discoid dis·coid (dĭs'koid') or dis·coi·dal (dĭ-skoid'l)
adj.
Shaped like or resembling a disk.

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