1.a. Having the whole or part of the perianth petaline.
Medical Definition of Petaloideous
1. Having the whole or part of the perianth petaline. Petaloideous division, that division of endogenous plants in which the perianth is wholly or partly petaline, embracing the Liliaceae, Orchidaceae, Amaryllideae, etc.
Source: Websters Dictionary
(01 Mar 1998)
