illuminant
Americannoun
noun
adjective
Other Word Forms
Etymology
Origin of illuminant
1635–45; < Latin illūminant- (stem of illūmināns ) present participle of illūmināre to light up, brighten, equivalent to illūmin- ( see illumine) + -ant- -ant
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A fixture even more than a star, either way an illuminant.
From New York Times ● Jan. 29, 2021
Kerosene was the dominant illuminant fuel for a few decades between the decline of whale oil and the rise of electricity.
From Forbes ● Oct. 21, 2011
Also that as an illuminant, I was long familiar only with the use of oil, shedding its feeble light, p. 119this being superseded by the gas derived from coal.
From Addresses & Papers / Collectanea by Eade, Peter
This torch is a good and economical illuminant.
From The Manóbos of Mindanáo Memoirs of the National Academy of Sciences, Volume XXIII, First Memoir by Garvan, John M.
S represents our glass slide of 3 inches clear diameter, R the radiant or illuminant, and L our objective, shown here for the sake of simplicity as a single lens.
From Optical Projection Part 1: Projection of Lantern Slides by Wright, Lewis
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
