Syn·en·tog·na·thi n. pl.  Zool. An order of fishes, resembling the Physoclisti, without spines in the dorsal, anal, and ventral fins. It includes the true flying fishes.
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  Synentognathi
       n : order of fishes having spineless fins; needlefishes;
           sauries; flying fishes; halfbeaks [syn: order
           Synentognathi]