'Cirrostomi' definitions:
Definition of 'Cirrostomi'
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Cirrostomi \Cir`ros"to*mi\, n. pl. [NL., fr. E. cirrus + Gr. ?
mouth.] (Zool.)
The lowest group of vertebrates; -- so called from the cirri
around the mouth; the Leptocardia. See Amphioxus.
[1913 Webster]
