fluorescence

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fluorescence

 [floo͡-res´ens]
the property of emitting light while exposed to light, the wavelength of the emitted light being longer than that of the absorbed light.
fluorescence microscopy the use of a fluorescence microscope to identify microorganisms or specific tissue constituents that have been stained with a fluorochrome or a fluorochrome-labeled substance (such as an antibody to a tissue antigen). A fluorescent antibody test can be used in place of time-consuming culture methods for identifying bacteria. See also immunofluorescence.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

fluor·es·cence

(flōr-es'ents),
Emission of a longer wavelength radiation by a substance as a consequence of absorption of energy from a shorter wavelength radiation, continuing only as long as the stimulus is present; distinguished from phosphorescence, in which emission persists for a perceptible period of time after the stimulus has been removed. See: photoelectric effect.
[fluorspar + -escence, inchoative suffix]
Farlex Partner Medical Dictionary © Farlex 2012

fluorescence

(flo͝o-rĕs′əns, flô-, flō-)
n.
1. The emission of electromagnetic radiation, especially of visible light, stimulated in a substance by the absorption of incident radiation and persisting only as long as the stimulating radiation is continued.
2. The property of emitting such radiation.
3. The radiation so emitted.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

fluor·es·cence

(flōr-es'ĕns)
Emission of a longer wavelength radiation by a substance as a consequence of absorption of energy from a shorter wavelength radiation, continuing only as long as the stimulus is present; distinguished from phosphorescence in that, in the latter, emission persists for a perceptible period of time after the stimulus has been removed.
[fluorspar + -escence, formative suffix]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

fluorescence

Emission of electromagnetic radiation, especially coloured visible light, during the period of absorption of radiation, which is often of a different frequency from the emitted radiation. Some substances, for instance, fluoresce visibly under ambient invisible ultraviolet light.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

fluorescence

the property of giving out light when molecules are excited by incident light. Emitted light is always of a shorter wavelength than the incident light.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

fluorescence

Property of a substance that, when illuminated absorbs light of a given wavelength and re-emits it as radiations of a longer wavelength. Example: fluorescein. See Draper's law; Wood's light; lumi-nescence.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

fluor·es·cence

(flōr-es'ĕns)
Emission of a longer wavelength radiation by a substance due to absorption of energy from a shorter wavelength radiation, continuing only as long as stimulus present.
[fluorspar + -escence, formative suffix]
Medical Dictionary for the Dental Professions © Farlex 2012