discoid

discoid
/dis"koyd/, adj. Also, discoidal.
1. having the form of a discus or disk; flat and circular.
2. Bot. (of a composite flower) consisting of a disk only, without rays.
n.
3. something in the form of a disk.
4. Dentistry. an excavator with a disklike blade.
[1785-95; < LL discoides < Gk diskoeidés quoit-shaped. See DISCUS, -OID]

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Universalium. 2010.

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