1.n. pl. A group of invertebrates including the Tunicata and Enteropneusta.
Medical Definition of Pharyngopneusta
1. A group of invertebrates including the Tunicata and Enteropneusta. Pharyngopneus"tal.
Origin: NL, fr. Gr. The pharynx + to breathe.
Source: Websters Dictionary
(01 Mar 1998)