thaliacea Meaning, Definition & Usage

  1. noun small class of free-swimming tunicates; sometimes classified as an order
    class Thaliacea.

WordNet

Tha`li*a"ce*a noun plural
Etymology
NL. See Thalia.
Definitions
  1. (Zoöl.) A division of Tunicata comprising the free-swimming species, such as Salpa and Doliolum.

Webster 1913