Definition of luminescence in US English:



  • The emission of light by a substance that has not been heated, as in fluorescence and phosphorescence.

    • ‘Pholasin alone can emit luminescence if exposed to superoxide.’
    • ‘Not electrical, but green luminescence; a glowing paint that had been painted along every shelf and spare inch of wall or floor.’
    • ‘Chemiluminescence is a special case of luminescence in which the excitation source is a chemical reaction.’
    • ‘He studied seawater luminescence and ocean temperatures while charting the path of the Gulf Stream.’
    • ‘Most of the arthropods consist of an infill of sparry calcite with uniform luminescence.’
    • ‘This luminescence makes them interesting candidates for applications in biological test systems or as sensors.’
    • ‘The luminescence was quantified in live cells using bioluminescence imaging.’
    • ‘The luminescence in these cases may be excited by direct electron impact rather than with UV light.’
    • ‘It seems clear that the photocyte has substantial local control of its luminescence and is not dependent on external oxygen in any simple way.’
    • ‘There are different types of luminescence.’
    • ‘A proportion of this energy appears in the form of light emitted by the crystal; this is optically stimulated luminescence.’
    • ‘When a laser light source is used to stimulate the release of electrons, the process is called optically stimulated luminescence.’
    • ‘This might be explained by the pattern of brain generated neural bursts that initiate luminescence and this appears to be the case in P. lucicrescens.’
    • ‘Intriguingly, rhythmic luminescence in certain lines was affected by only a subset of the pacemaker mutations.’
    • ‘Streptococci emit light during log phase growth, and luminescence subsides as they enter stationary phase.’
    • ‘In the nonsilenced plant, strong luminescence was detected from all parts of the section, while no luminescence was found in the control plant.’
    • ‘The acceleration of the recombination rate and the strong stimulation of luminescence caused by the membrane potential are well known.’
    • ‘This property also leads to the intense luminescence and electron transfer capability of porphyrins and many metalloporphyins.’
    light, shining, brightness, brilliance, luminosity, radiation, beams, rays, illumination, blaze, glow, luminousness, gleam, lustre, glitter, sparkle, flash, dazzle, shimmer, glare
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Late 19th century: from Latin lumen, lumin- ‘light’ + -escence (denoting a state).