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Definition of pineal noun from the Oxford Advanced Learner's Dictionary

pineal

noun
 
/paɪˈniːəl/
 
/paɪˈniːəl/
(also pineal gland)
(anatomy)
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  1. a small organ in the brain that releases a hormone
    Word Originlate 17th cent.: from French pinéal, from Latin pinea ‘pine cone’. The current anatomical usage refers to the shape of the gland.
See pineal in the Oxford Advanced American Dictionary
Check pronunciation: pineal

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aspiration
noun
 
 
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