Definition of Scombroidea
: a suborder of Percomorphi that comprises active streamlined marine fishes having a narrow caudal peduncle, scales absent or small and sometimes spiny, a usually long dorsal fin without projecting spines but sometimes with finlets, a lunate or forked caudal fin and including numerous oily-fleshed fishes (as mackerels, tunas, albacores, bonitos, and swordfishes) and that are of great economic importance as food fishes
