English Noun sea star wasting disease (plural sea star wasting diseases) (marine biology) A disease of starfish and several other echinoderms appearing sporadically, causing mass mortality of those affected. Alternative forms seastar wasting disease sea-star wasting disease Synonyms starfish wasting disease Translations starfish disease French: syndrome du dépérissement de l’étoile de mer m Wikiwand - on Seamless Wikipedia browsing. On steroids.