porta-potty in English dictionary porta-potty Meanings and definitions of "porta-potty" A portable toilet; a self-contained outhouse. (UK) A portable chemical toilet comprised of only the fixture rather than the entire enclosure. noun A portable toilet, ( in Britain, chiefly) a chemical toilet comprised of only the fixture rather than an entire enclosure. more Grammar and declension of porta-potty porta-potty ( plural porta-potties) porta-potty (plural porta-potties) more Sample sentences with "porta-potty" Declension Stem Try again Available translations Cornish Finnish German Portuguese Russian Authors