Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The state or quality of being sound.
  • n. The result or product of being sound.
  • n. The property (of an argument) of not only being valid, but also of having true premises.
  • n. The property of a logical theory that whenever a wff is a theorem then it must also be valid. Symbolically, letting T represent a theory within logic L, this can be represented as the property that whenever is true, then must also be true, for any wff φ of logic L.

from the GNU version of the Collaborative International Dictionary of English

  • n. The quality or state of being sound

from The Century Dictionary and Cyclopedia

  • n. The state of being sound, in any sense.

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

  • n. a state or condition free from damage or decay
  • n. the quality of being prudent and sensible
  • n. the muscle tone of healthy tissue

Etymologies

From sound +‎ -ness (Wiktionary)

Examples

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  • "The paladin was soon relieved from pain, and in a few days his foot was perfectly restored to soundness."
    - Thomas Bulfinch, 'Age of Fable'.

    September 19, 2009