pectoral fin
1pectoral fin — n. either of a pair of fins, associated with the pectoral girdle, just behind the head of a fish, corresponding to the forelimbs of a higher vertebrate: see FISH …
2pectoral fin — noun count the FIN on each side of a fish just behind its head that controls the direction it moves in …
3pectoral fin — the paired fin borne by the pectoral girdle, usually just behind the gill opening or slightly dorsal or ventral to this position. Also called omopterygium or homopterygium. This fin is generally larger than the pelvic fin and less variable in… …
4pectoral fin — UK / US noun [countable] Word forms pectoral fin : singular pectoral fin plural pectoral fins biology a fin on each side of a fish just behind its head that controls the direction it moves in …
5pectoral fin rotatores — muscle fibres on the leading and trailing edges of the pectoral fin, continuations of the abductores and adductores …
6pectoral fin — noun (C) the fin that is on the side of a fish s head and helps it to control the direction it swims in …
7pectoral fin — pec′toral fin′ n. ich (in fishes) either of a pair of fins usu. situated behind the head, one on each side, and corresponding to the forelimbs of higher vertebrates • Etymology: 1760–70 …
8pectoral fin — /pɛktrəl ˈfɪn/ (say pektruhl fin) noun (in fishes) either of a pair of lateral fins situated usually behind the head, and homologous with the forelimbs of higher vertebrates …
9pectoral fin — noun either of a pair of fins situated just behind the head in fishes that help control the direction of movement • Hypernyms: ↑fin …
10pectoral fin — noun Date: 1769 either of the fins of a fish that correspond to the forelimbs of a quadruped …
