Parietal may refer to:

• Parietal placentation
• Parietal lobe of the brain
• Parietal bone of the skull
• Parietal scales of a snake lie in the general region of the parietal bone.
• Parietal cell in the stomach
• Parietal pleura
• Parietal pericardium

• Parietal eye, "third eye" of some animal species.
• The term may also refer to an extension of bone, popularly known as a neck frill, on the skulls of dinosaurs of the suborder Marginocephalia.

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