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View synonyms for observable

observable

[ uhb-zur-vuh-buhl ]

adjective

  1. capable of being or liable to be observed; noticeable; visible; discernible:

    an observable change in attitude.

  2. worthy or important enough to be celebrated, followed, or observed:

    an observable holiday.

  3. deserving of attention; noteworthy.

observable

/ əb-zûr′və-bəl /

  1. A measurable property of a physical system, such as mass or momentum. In quantum mechanics, observables correspond to mathematical operators used in the calculation of measurable quantities. Operators that do not commute , having a nonzero commutator , correspond to observables that cannot be precisely measured at the same time, such as momentum and position.

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Other Words From

  • ob·serva·bili·ty ob·serva·ble·ness noun
  • ob·serva·bly adverb
  • nonob·serva·ble adjective
  • nonob·serva·bly adverb
  • unob·serva·ble adjective

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Word History and Origins

Origin of observable1

1600–10; < Latin observābilis remarkable, equivalent to observā ( re ) to observe + -bilis -ble

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