What does observable mean?

Definitions for observableəbˈzɜr və bəl

Here are all the possible meanings and translations of the word observable.

Princeton's WordNet

  1. discernible, evident, observable(adj)

    capable of being seen or noticed

    "a discernible change in attitude"; "a clearly evident erasure in the manuscript"; "an observable change in behavior"


  1. Observable(a.)

    Worthy of being observed; important enough to be noted or celebrated; as, an observable anniversary.

  2. Observable(a.)

    Noteworthy; remarkable.

  3. Origin: [L. observabilis: cf. F. observable.]


  1. observable(Noun)

    Any physical property that can be observed and measured directly and not derived from other properties

  2. observable(Adjective)

    Able to be observed.

  3. observable(Adjective)

    Deserving to be observed.

Webster Dictionary

  1. Observable(adj)

    worthy or capable of being observed; discernible; noticeable; remarkable

  2. Origin: [L. observabilis: cf. F. observable.]


  1. Observable

    In physics, particularly in quantum physics, a system observable is a measurable operator, or gauge, where the property of the system state can be determined by some sequence of physical operations. For example, these operations might involve submitting the system to various electromagnetic fields and eventually reading a value off some gauge. In systems governed by classical mechanics, any experimentally observable value can be shown to be given by a real-valued function on the set of all possible system states. Physically meaningful observables must also satisfy transformation laws which relate observations performed by different observers in different frames of reference. These transformation laws are automorphisms of the state space, that is bijective transformations which preserve some mathematical property.


  1. Chaldean Numerology

    The numerical value of observable in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of observable in Pythagorean Numerology is: 2

Sample Sentences & Example Usage

  1. Alexis Carrel:

    Science has to be understood in its broadest sense, as a method for comprehending all observable reality, and not merely as an instrument for acquiring specialized knowledge.

  2. Michael Mina:

    Our work reiterates the true importance of preserving high levels of measles vaccine coverage as the consequences of measles infections may be much more devastating than is readily observable.

  3. Jorge Chavarro:

    I think it is important that these results are replicated in other studies, as it is also important to determine whether the effects on sperm quality translate into observable effects on fertility.

  4. Daniel Pinkston:

    Preparations for the Unha-3, and whatever new space launch vehicle they might roll out, will be observable well in advance of a launch, so it is not a system that can be used for any military objective.

  5. Jocelyn Dunne:

    One of the hardest parts was not being able to get away, you're always observable by the other people. You're constantly together. Even though we're isolated from the rest of the world we're constantly together in our own social situation.

Images & Illustrations of observable

  1. observableobservableobservable

Translations for observable

From our Multilingual Translation Dictionary

Get even more translations for observable »


Find a translation for the observable definition in other languages:

Select another language:

Discuss these observable definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"observable." Definitions.net. STANDS4 LLC, 2018. Web. 19 Feb. 2018. <https://www.definitions.net/definition/observable>.

Are we missing a good definition for observable? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for observable:

Thanks for your vote! We truly appreciate your support.