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[kan-dee-luh] /kænˈdi lə/
noun, Optics.
a basic unit of luminous intensity in the International System of Units (SI), formally defined as the luminous intensity of a source that emits monochromatic radiation of frequency 540 × 10 12 hertz and that has a radiant intensity of 1/683 watt/steradian: adopted in 1979 as the international standard of luminous intensity.
Abbreviation: Cd.
Origin of candela
1945-50; < Latin: candle Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for candela
Historical Examples
  • We then, guided by candela, hurried forward on our journey, keeping a sharp look-out lest the fugitive Indians should return.

    The Young Llanero W.H.G. Kingston
  • Of course the padre wished to know how it was I had found candela; so I gave him a full account of all that had happened.

    The Young Llanero W.H.G. Kingston
  • candela now pushed on at a rapid rate, till we saw the light of our camp-fire a short distance off.

    The Young Llanero W.H.G. Kingston
  • Calling candela, he led him some way down the valley towards a grove of trees, among which were a great variety of creepers.

    The Young Llanero W.H.G. Kingston
British Dictionary definitions for candela


/kænˈdiːlə; -ˈdeɪlə/
the basic SI unit of luminous intensity; the luminous intensity in a given direction of a source that emits monochromatic radiation of frequency 540 × 1012 hertz and that has a radiant intensity in that direction of (1/683) watt per steradian cd Also called candle, standard candle
Word Origin
C20: from Latin: candle


Felix. 1910–97, Mexican architect, noted for his naturalistic modern style and thin prestressed concrete roofs
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for candela

unit of luminous intensity, 1950, from Latin candela (see candle).

Online Etymology Dictionary, © 2010 Douglas Harper
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candela in Medicine

candela can·del·a (kān-děl'ə)
Abbr. cd
A unit of measurement of luminous flux, equal to the amount of light given out through a solid angle by a source of one candela radiating equally in all directions. Also called candle.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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candela in Science
The SI unit used to measure the brightness of a source of light (its luminous intensity). By definition, one square centimeter of a blackbody at the freezing point of platinum emits one-sixtieth of a candela of radiation. See Table at measurement. See also lumen, luminous flux.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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