orbicular
adj.
"round, circular, spherical," mid-15c., from Old French orbiculaire "round, circular," or directly from Late Latin orbicularis "circular, orbicular," from Latin orbiculus, diminutive of orbis "circle" (see orb). Related: Orbicularity.
〔李〕[orb;-iculara.] a.球形的； 浑然一体的，完整的 ←orb,orbit (L orbis,orbita)=circle 圆圈