I. ˈdisˌkȯid adjective
Etymology: Late Latin discoides quoit-shaped, from Greek diskoeidēs, from disk- disc- + -oeidēs -oid
1. : like a disk or discus : flat and circular
a discoid body
2. : relating to or having a disk: as
a. of a composite floret : situated in the floral disk : being a disk floret
b. of a composite flower head : having only tubular florets
II. noun
( -s )
1. : something shaped like a discus or disk
the concept of the galactic system as a stellar discoid … was soon abandoned — Harlow Shapley
2. : discoidal