SG Heritage Dictionary

Portulaca [Noun] Webster's Dictionary 1913

A genus of polypetalous plants; also, any plant of the genus.

Portulacaceous [Adjective] Webster's Dictionary 1913

Of or pertaining to a natural order of plants (Portulacaceae), of which Portulaca is the type, and which includes also the spring beauty (Claytonia) and other genera.