watermelon begonia wa·ter·me·lonbegonia uncommon noun 1. grown as a houseplant for its silvery striped fleshy foliage; South America Synonymswatermelon begoniaPeperomia argyreiaPeperomia sandersii Related words Broader terms peperomia WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
