Orbiculate \Or*bic"u*late\, n. That which is orbiculate; especially, a solid the vertical section of which is oval, and the horizontal section circular.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Orbiculate \Or*bic"u*late\, Orbiculated \Or*bic"u*la`ted\, a. [L. orbiculatus. See Orbicular.]

Made, or being, in the form of an orb; having a circular, or nearly circular, or a spheroidal, outline.

Orbiculate leaf (Bot.), a leaf whose outline is nearly circular.

Source: Webster's Revised Unabridged Dictionary (1913)