noun.
The expanded, cup-like, deciduous structure on the ends of the stems of certain entoproctous Polyzoa, containing most of the organs and hence practically an individual.
noun.
A depression formed by the more or less reticulate folding of the skin, as in the intromittent organs of snakes.
noun.
A cup-shaped excavation on the surface of the ovary which remains after the rupture of a Graafian vesicle.
noun.
Any circular piece which resembles in form the calyx of a flower.
noun.
In botany, in general, the outer set of the envelops which form the perianth of a flower.
noun.
In human anatomy, one of the cup-like or infundibuliform beginnings of the ureter in the pelvis of the kidney, surrounding the apices of the Malpighian pyramids, each receiving usually more than one pyramid.
noun.
In zoology: The cup at the base of the ciliated tentacles on the lophophore or oral disk of polyzoans. See Plumatella.
noun.
The pedicellated Graafian follicle, ovarian capsule, or ovisac of a bird, consisting of two membranes of lax tissue and blood-vessels, rupturing at a point called the stigma to discharge the ovum, then collapsing, and finally becoming absorbed.
noun.
In crinoids, the cup at the summit of the stȧlk or stem, whence the brachia radiate and on the surface of which is the mouth.
noun.
In Hydrozoa, a generative capsule developed in the axils of a branched hydroid stock, containing either medusa-buds or sexual organs.
noun.
Some other calyciform or cup-shaped part or organ of an animal.