'Perichaetous' definitions:

Definition of 'Perichaetous'

From: GCIDE
  • Perichaetous \Per`i*ch[ae]"tous\, a. [See Perich[ae]tium.] (Zool.) Surrounded by set[ae]; -- said of certain earthworms (genus Perich[ae]tus). [1913 Webster]