Petunia \Pe*tu"ni*a\ (p[-e]*t[=u]"n[i^]*[.a]), n. [NL., fr. Braz. petun tobacco.] (Bot.) A genus of solanaceous herbs with funnel-form or salver-shaped corollas. Two species are common in cultivation, {Petunia violacea}, with reddish purple flowers, and {Petunia nyctaginiflora}, with white flowers. There are also many hybrid forms with variegated corollas. [1913 Webster] Petuntse Petunse