'Portulacaceous' definitions:
Definition of 'Portulacaceous'
- Portulacaceous \Por`tu*la*ca"ceous\, a. (Bot.)
Of or pertaining to a natural order of plants
(Portulacace[ae]), of which Portulaca is the type, and
which includes also the spring beauty (Claytonia) and other
genera.
[1913 Webster]