Zoology. a median outgrowth of the diencephalon anterior to the pineal apparatus, having visual adaptations in many anamniotes and lizards.


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    parietal fistula n. A blind or complete fistula opening on the wall of the thorax or the abdomen.

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    parietal foramen n. An opening in the parietal bone near the sagittal margin to the rear.

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    noun, Anatomy. 1. the middle part of each cerebral hemisphere behind the central sulcus. noun 1. the portion of each cerebral hemisphere concerned with the perception and interpretation of sensations of touch, temperature, and taste and with muscular movements parietal lobe n. The middle portion of each cerebral hemisphere, separated from the frontal lobe by […]

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