Definition of observable in US English:



  • Able to be noticed or perceived; discernible.

    ‘observable differences’
    • ‘Other realms might exist beyond the edge of our observable universe, or in extra dimensions we are unable to perceive.’
    • ‘In this regard, sad to say, brain events appear to be no more transparent than other observable events like reaction time.’
    • ‘Since all observable objects have some definitive shape and size then atoms do also.’
    • ‘The photograph emerges from the world of non-fiction, it is the product and evidence of the observable world.’
    • ‘One feels in the presence of obvious intelligence and observable skill.’
    noticeable, visible, perceptible, perceivable, detectable, discernible, recognizable, obvious, evident, manifest, patent, clear, distinct, plain, overt, conspicuous, palpable, distinguishable, unmistakable, unconcealed, apparent
    View synonyms