Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The brain of a vertebrate.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The area of central nervous system that includes all higher nervous centers, enclosed within the skull and continuous with the spinal cord; the brain.

from the GNU version of the Collaborative International Dictionary of English

  • n. The contents of the cranium; the brain.

from The Century Dictionary and Cyclopedia

  • n. In anatomy, that which is contained in the cranial cavity as a whole; the brain.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord

Etymologies

Greek enkephalon, from neuter of enkephalos, in the head; see encephalo-.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek ἐγκέφαλος (enkephalos, "within the head"), from ἐν (en, "in") + κεφαλή (kephalē, "head"). (Wiktionary)

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