caudal keel

noun

A lateral ridge found just anterior to each side of the tail fin on the caudal peduncle of some types of fast-swimming fish. The keels improve the stability of the fish's attitude at speed in the water, and strengthen the support of the caudal fin.

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Meanings

nouncaudal keel (plural caudal keels)

plural caudal keels

  1. biologyA lateral ridge found just anterior to each side of the tail fin on the caudal peduncle of some types of fast-swimming fish. The keels improve the stability of the fish's attitude at speed in the water, and strengthen the support of the caudal fin.
Cite this entry
APA

caudal keel. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/caudal%20keel

MLA

“caudal keel.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/caudal%20keel. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “caudal keel,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/caudal%20keel.

Source: caudal keel on Wiktionary, CC BY-SA 4.0.