any of a class (Ascidiacea) of fixed tunicates; sea squirt
Origin of ascidian; from Modern Latin ; from Classical Greek askidion: see ascidium
See sea squirt.
Origin of ascidianFrom New Latin Ascidia, genus name, from Greek askidion, diminutive of askos, wineskin.
- Any member of the class Ascidiacea (the sea squirts)