01 a. 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.
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1.
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.
Phrases & compounds
Discoid flower —
a compound flower, consisting of tubular florets only, as a tansy, lacking the rays which are seen in the daisy and sunflower.