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Webster 1913 Edition

‖

Noun.

pl.

[NL., fr. L.

brachiolum

(

bracch

-), dim. of

brachium

(

bracch

-) arm.]

(Zool.)

A peculiar early larval stage of certain starfishes, having a bilateral structure, and swimming by means of bands of vibrating cilia.

brachiolaria ‎(plural brachiolarias)

(zoology) The second stage of larval development in many sea stars, following the bipinnaria.