Orbicular \Or*bic"u*lar\, 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. Orbicular as the disk of a planet. --De Quincey.