From The Collaborative International Dictionary of English v.0.48 [gcide]:
Discoid \Dis"coid\, n.
Anything having the form of a discus or disk; particularly, a
discoid shell.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Discoid \Dis"coid\, a. [Gr. ? quoit-shaped, ? a round plate,
quoit + e'i^dos form, shape: cf. F. disco["i]de. See {Disk}.]
Having the form of a disk, as those univalve shells which
have the whorls in one plane, so as to form a disk, as the
pearly nautilus.
[1913 Webster]
{Discoid flower} (Bot.), a compound flower, consisting of
tubular florets only, as a tansy, lacking the rays which
are seen in the daisy and sunflower.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
discoid
adj 1: having a flat circular shape [syn: {discoid},
{discoidal}, {disklike}, {disclike}, {disk-shaped},
{disc-shaped}]
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