What does "pterygiophore" mean?

Any of the bones in a fish that support the dorsal fin. There are two to three of them: proximal, middle, and distal. In spinous fins the distal is often fused to the middle or not present at all.

Pterygiophore

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Any of the bones in a fish that support the dorsal fin. There are two to three of them: proximal, middle, and distal. In spinous fins the distal is often fused to the middle or not present at all.

Etymology

From pterygium + -phore.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.