What does pineal mean?
A small endocrine gland in the vertebrate brain that produces melatonin and regulates the sleep-wake cycle. It is also a term used in mysticism and spirituality to refer to a supposed seat of the soul.
Example
"The pineal gland plays a crucial role in regulating our circadian rhythms."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.