precuneus

A division of the medial surface of each cerebral hemisphere between the cuneus and the paracentral lobule; it lies above the subparietal sulcus and is bounded anteriorly by the marginal branch of the cingulate sulcus and posteriorly by the parietooccipital sulcus. SYN: lobulus quadratus (2), quadrate lobe (3), quadrate lobule (2). [pre- + L. cuneus, a wedge]

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pre·cu·ne·us -'kyü-nē-əs n, pl -nei -nē-.ī a somewhat rectangular convolution bounding the mesial aspect of the parietal lobe of the cerebrum and lying immediately in front of the cuneus

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n.

an area of the inner surface of the cerebral hemisphere on each side, above and in front of the corpus callosum. See cerebrum.

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pre·cu·ne·us (pre-kuґne-əs) [pre- + cuneus] [TA] a small wedge-shaped convolution on the medial surface of the parietal lobe of the cerebrum, bounded posteriorly by the medial part of the parietooccipital sulcus and anteriorly by the marginal sulcus and posterior paracentral gyrus. precuneate adj