Pĕr'i-anth, n.

n. [Fr. périanthe, It. perianto, perianzo, N. Lat. perianthium; fr. Gr. περί, around, about, and ἄνθος, flower.] (Bot.) (a.) That calyx which envelops only a single flower, and is immediately contiguous to it. (b.) The leaves of the flower generally, especially when the calyx and corolla are not readily distinguished.