Entry 2 senses · 2 variants Webster, 1913 Amphipod /ămˈ -fĭ-pŏd/ · Am·phi·pod · IPA /ˈam.fɪ.pɑd/ n. a. 01 n. One of the Amphipoda. 1. One of the Amphipoda.(Zool.) 02 a. Of or pertaining to the Amphipoda. 1. Of or pertaining to the Amphipoda.(Zool.)