Source : Webster's Revised Unabridged Dictionary (1913)

Xiphioid \Xiph"i*oid\, a. [Xiphius + -oid.] (Zo["o]l.)
   Of, pertaining to, or resembling, a cetacean of the genus
   Xiphius or family {Xiphiid[ae]}.

Source : WordNet®

Xiphiidae
     n : comprising the common swordfishes [syn: {family Xiphiidae}]