Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

pineal

play
adjective pi·ne·al \ˈpī-nē-əl, pī-ˈ\

Definition of pineal

  1. :  of, relating to, or secreted by the pineal gland <a pineal tumor> <the pineal hormone melatonin>



Origin and Etymology of pineal

French pinéal, from Middle French, from Latin pinea pinecone, from feminine of pineus of pine, from pinus


First Known Use: 1681


Medical Dictionary

1

pineal

play play
adjective pi·ne·al \ˈpī-nē-əl, pī-ˈ\

Medical Definition of pineal

  1. :  of, relating to, or being the pineal gland




2

pineal

noun pi·ne·al

Medical Definition of pineal




Seen and Heard

What made you want to look up pineal? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to depart quickly

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

accomodate acommadate accommodate acommodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ