Definition of rachiglossate in US English:

rachiglossate

adjective

Zoology
  • Designating a radula bearing a median series of single teeth, often flanked by one row of lateral teeth on each side; having such a radula, typical of most neogastropods.

Origin

Late 19th century; earliest use found in Ray Lankester (1847–1929), zoologist. After scientific Latin Rachiglossa, superfamily or suborder name from rachi- + ancient Greek γλῶσσα tongue.