quadrigeminal

CIDE DICTIONARY

quadrigeminal, a. [Quadri- + L. gemini twins.].

 Fourfold; having four similar parts, or two pairs of similar parts.  [1913 Webster]

Quadrigeminal bodies (Anat.), two pairs of lobes, or elevations, on the dorsal side of the midbrain of most mammals; the optic lobes. The anterior pair are called the nates, and the posterior the testes.

ROGET THESAURUS

quadrigeminal

Quadruplication

N quadruplication, fourfold, four times, quadrable, quadrumanous, quadruple, quadruplicate, quadrible, fourth, quadrifoliate, quadrifoliolate, quadrigeminal, quadrigeminate, quadriplanar, quadriserial, four times, in the fourth place, fourthly.