pineal

adjective

pi·ne·al | \ ˈpī-nē-əl

, pī-ˈnē-

Definition of pineal

: of, relating to, or secreted by the pineal gland a pineal tumor the pineal hormone melatonin

Recent Examples on the Web

This video shows a monitor lizard skull fossil fragment with both the parietal and pineal foramina visible (highlighted in yellow). — Amina Khan, latimes.com, "If two eyes are good, four were even better for this lizard species," 3 Apr. 2018 What purpose the fourth eye served in addition to pineal eye is hard to say. — David Grossman, Popular Mechanics, "An Ancient Lizard Had Four Eyes But We Don't Know Why," 2 Apr. 2018

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More Definitions for pineal

pineal

adjective

pi·ne·al | \ ˈpī-nē-əl

(Entry 1 of 2)

: of, relating to, or being the pineal gland

pineal

noun

Medical Definition of pineal (Entry 2 of 2)

: pineal gland