%geminou%

{ } 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. [ 1913 Webster ]

a. [ L. tergeminus; ter thrice + geminus doubled at birth, twin-born. Cf. Trigeminous. ] Threefold; thrice-paired. Blount. [ 1913 Webster ]