[ pin-ee-uh l, pahy-nee-, pahy-nee- ]
/ ˈpɪn i əl, ˈpaɪ ni-, paɪˈni- /


resembling a pine cone in shape.
of or relating to the pineal body.

Nearby words

  1. pine tree shilling,
  2. pine tree state,
  3. pine warbler,
  4. pine-barren,
  5. pine-tree,
  6. pineal apparatus,
  7. pineal body,
  8. pineal eye,
  9. pineal gland,
  10. pineal stalk

Origin of pineal

1675–85; < New Latin pīneālis, equivalent to Latin pīne(a) pine cone, noun use of feminine of pīneus of a pine tree (pīn(us) pine1 + -eus -eous) + -ālis -al1

Related formspre·pin·e·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pineal

British Dictionary definitions for pineal


/ (ˈpɪnɪəl, paɪˈniːəl) /


resembling a pine cone
of or relating to the pineal gland

Word Origin for pineal

C17: via French from Latin pīnea pine cone

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for pineal



1680s, in reference to the gland in the brain, from French pinéal, literally "like a pine cone," from Latin pinea "pine cone," from pinus "pine tree" (see pine (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for pineal


[ pĭnē-əl, pīnē- ]


Having the form of a pine cone.
Of or relating to the pineal body.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.