Quad·ri·gem·i·nal Quad·ri·gem·i·nous a. Fourfold; having four similar parts, or two pairs of similar parts.
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.
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