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⇱ dorsal fin - WordReference.com Dictionary of English

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  - Dorr's Rebellion
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  - dorsal fin
  - dorsal lip
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dorsal fin

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WordReference Random House Unabridged Dictionary of American English © 2026

dor′sal fin′,

Zoologythe fin or finlike integumentary expansion generally developed on the back of aquatic vertebrates. See diag. under fish.

1760–70

Collins Concise English Dictionary © HarperCollins Publishers::

dorsal fin n

any unpaired median fin on the backs of fishes and some other aquatic vertebrates: maintains balance during locomotion

'dorsal fin' also found in these entries (note: many are not synonyms or translations):

angler - bass - blenny - bowfin - butterfish - carp - cusk - grayling - killer whale - Moorish idol - right whale - rorqual - ruffe - sailfish - sauger - sea bass - snipefish - torsk - triggerfish - weever - adipose fin - featherback - finback - finspot - gaff-topsail catfish - jackknife-fish - John Dory - lure - oarfish - prickleback - quillback - roosterfish - woundfin - sea lion - smooth dogfish - spearfish - stonefish

In Lists: Whales, Sharks, Fish, more...

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