Definitions

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

  • adj. Belonging to or reserved for a small select group; esoteric.
  • adj. Elevated in character or style; lofty.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Esoteric.
  • adj. Less dense than usual.
  • v. Simple past tense and past participle of rarefy.

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

  • adj. having low density
  • adj. of high moral or intellectual value; elevated in nature or style

Etymologies

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