strangeness

English

Etymology

From Middle English straungenesse; equivalent to strange +‎ -ness.

Noun

strangeness (usually uncountable, plural strangenesses)

  1. (uncountable) The state or quality of being strange, odd or weird.
    Synonyms: oddity, weirdness; see also Thesaurus:strangeness
  2. (countable) The product or result of being strange.
  3. (particle physics) One of the quantum numbers of subatomic particles, depending upon the relative number of strange quarks and anti-strange quarks.
    Coordinate term: charm
    • 2020, James E. Dodd, Ben Gripaios, The Ideas of Particle Physics, Cambridge University Press, →ISBN, page 173:
      Mesons which combine the charmed quark with the up or down antiquarks are denoted the D mesons. These mesons carry explicit charm (i.e. have a non-zero charm quantum number), just as the K mesons carry strangeness.

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