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Definition of Pineal
1. Adjective. Relating to the pineal body. "Pineal hormone"
Partainyms: Pineal Body
2. Adjective. Having the form of a pine cone.
Similar to: Rounded
Definition of Pineal
1. a. Of or pertaining to a pine cone; resembling a pine cone.
Definition of Pineal
1. Adjective. In the shape of a pine cone. ¹
2. Adjective. Pertaining to the pineal gland. ¹
3. Noun. The pineal gland. ¹
¹ Source: wiktionary.com
Definition of Pineal
1. a gland in the brain [n -S]
Medical Definition of Pineal
1. A gland-like structure in the brain which appears to be the major site of melatonin biosynthesis. The exact role of the pineal remain obscure. (27 Sep 1997)