Dis"coid (?), a. [Gr. quoit-shaped, a round plate, quoit + form, shape: cf. F. discoide. 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.

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.


© Webster 1913.

Dis"coid, n.

Anything having the form of a discus or disk; particularly, a discoid shell.


© Webster 1913.

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