belonging to the Plectognathi, a group or order of fishes having the teeth fused into a beak and thick, often spiny, scaleless skin, and including the filefish, globefish, puffer, and triggerfish.
–noun
2.
a plectognath fish.
Origin: 1825–35; < NL Plectognathi, pl. of Plectognathus, equiv. to plecto- (< Gk plektós plaited, twisted; see -o-) + -gnathus-gnathous
plec·tog·nath (plěk'tŏg-nāth') n. Any of various tropical marine fishes of the order Tetraodontiformes or Plectognathi, which includes the triggerfishes, puffers, and trunkfishes.
[From New Latin Plectognathī, order name : Greek plektos, twisted; see plek- in Indo-European roots + Greek gnathos, jaw; see -gnathous.] plec'tog·nath' adj.