One of the mysteries of the English language finally explained.
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.
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.
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