Examples of illuminant in a Sentence
at the time, a spermaceti candle was the brightest indoor illuminant available
Recent Examples on the Web
Distilling rock oil produced multiple interesting compounds, one of which looked like an ideal illuminant.
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Charles R. Morris, WSJ, 21 June 2018
Charles R. Morris, WSJ, 21 June 2018
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'illuminant.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1644, in the meaning defined above
Dictionary Entries Near illuminant
Cite this Entry
“Illuminant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/illuminant. Accessed 19 Apr. 2024.
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Medical Definition
illuminant
noun
il·lu·mi·nant
-nənt 
: an illuminating device or substance (as for a microscope)
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