Definition of agastric in English:

agastric

adjective

Zoology
rare
  • Lacking, or apparently lacking, a stomach or an alimentary canal; characterized by this.

Origin

Early 19th century; earliest use found in Anti-Jacobin Review. From a- + gastric, probably after French agastrique.

Pronunciation:

agastric

/eɪˈɡastrɪk/