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

  • n. The quality or state of being one; singleness or wholeness.
  • n. Singularity; uniqueness.
  • n. A state or condition of perfect harmony or accord: "He intuited global truths. He thrilled at his oneness with humanity” ( Sally Jacobs).
  • n. Sameness of character: the disagreeable oneness of roadside landscapes.
  • n. Unison; agreement: oneness of mind and purpose.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. State of being one or undivided; unity.
  • n. The product of being one or undivided.

from the GNU version of the Collaborative International Dictionary of English

  • n. The state of being one; singleness in number; individuality; unity.

from The Century Dictionary and Cyclopedia

  • n. The quality of being just one, and neither more nor less than one; unity; union.
  • n. Sameness; uniformity; identity.

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

  • n. the quality of being united into one


From Middle English *onnes, from Old English ānnes ("oneness, unity, agreement, covenant, solitude"), equivalent to one +‎ -ness. (Wiktionary)



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