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pterygiophore
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English
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Noun
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pterygiophore
(
plural
pterygiophores
)
(
marine biology
)
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.