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• a  relating to the pineal body
  pineal hormone
• s  having the form of a pine cone

• This kind of decision making has less to do with the frontal lobe than with the pineal gland at the base of the brain.
• The pineal (glandular) body in the human brain, which is subtly related to certain conditions of obesity and certain sexual phenomena, is generally considered to be the vestige .
• Descartes believed the pineal gland was the seat of the soul, and doctors later thought it was man's third or inner eye.