Orbicula

a. [ L. orbicularis, fr. orbiculus, dim. of orbis orb: cf. F. orbiculaire. ] Resembling or having the form of an orb; spherical; circular; orbiculate. -- Or*bic"u*lar*ly, adv. -- Or*bic"u*lar*ness, n. [ 1913 Webster ]

Orbicular as the disk of a planet. De Quincey. [ 1913 Webster ]

n. That which is orbiculate; especially, a solid the vertical section of which is oval, and the horizontal section circular. [ 1913 Webster ]

{ } a. [ L. orbiculatus. See Orbicular. ] Made, or being, in the form of an orb; having a circular, or nearly circular, or a spheroidal, outline. [ 1913 Webster ]

Orbiculate leaf (Bot.), a leaf whose outline is nearly circular. [ 1913 Webster ]