1) Animal order 2) Boxfishes 3) Order plectognathi 4) Order tetraodontiformes 
• (n. pl.) An order of fishes generally having the maxillary bone united with the premaxillary, and the articular united with the dentary.
<zoology> An order of fishes generally having the maxillary bone united with the premaxillary, and the articular united with the dentary. ... The upper jaw is immovably joined to the skull; the ventral fins are rudimentary or wanting; and the body is covered with bony plates, spines, or small rough ossicles, like shagreen. The order includes ...
Plec·to'gna·thi noun plural [ New Latin , from Greek ... twisted (fr. ... to plait, twist) + ... jaw.] (Zoology) An order of fishes generally having the maxillary bone united with the premaxillary, and the articular united with the dentary. » The upper jaw is immovably joined to the ...
[n] - boxfishes
order Plectognathi noun boxfishes; filefishes; globefishes; ocean sunfishes; triggerfishes; puffers