xiphioid /ˈzɪfiɔɪd/adjective 3noun 1forms 3 adjective3 •Resembling or related to the genus Xiphias (swordfish). •Resembling or related to the family Xiphiidae (a group of fish). •Sword-shaped; ensiform. noun1 •Any member of the genus Xiphias or family Xiphiidae. formsxiphioids · more xiphioid · most xiphioid