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Webster 1913 Edition

Observable

Ob-serv′a-ble

,
Adj.
[L.
observabilis
: cf. F.
observable
.]
1.
Capable of being observed; discernible; noticeable.
Sir. T. Browne.
The difference is sufficiently
observable
.
Southey.
–
Ob-serv′a-ble-ness
,
Noun.
–
Ob-serv′a-bly
,
adv.

Webster 1828 Edition

Observable

OBSERV'ABLE

,
Adj.
s as z. [See Observe.]
1.
That may be observed or noticed.
2.
Worthy of observation or of particular notice; remarkable.
I took a just account of every observable circumstance of the earth, stone, metal or other matter.

Definition 2024

observable

observable

English

Adjective

observable ‎(comparative more observable, superlative most observable)

  1. Able to be observed.
    • The strange new star was at the edge of the observable universe
  2. Deserving to be observed.
    • Easter is an observable holiday

Translations

Noun

observable ‎(plural observables)

  1. (physics) Any physical property that can be observed and measured directly and not derived from other properties
    Temperature is an observable but entropy is derived.
    In quantum mechanics, observables correspond to Hermitian operators. Also, they act a lot like random variables. Taking their average one may recover something resembling a classical observable.

Translations

French

Etymology

observer +‎ -able

Adjective

observable m, f ‎(plural observables)

  1. observable

Derived terms

Spanish

Adjective

observable m, f ‎(plural observables)

  1. observable

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