as in lamp
something that provides illumination
at the time, a spermaceti candle was the brightest indoor illuminant available
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Recent Examples of illuminant
Distilling rock oil produced multiple interesting compounds, one of which looked like an ideal illuminant.
—
Charles R. Morris, WSJ, 21 June 2018
Charles R. Morris, WSJ, 21 June 2018
Recent Examples of Synonyms for illuminant
Noun
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Shop our top nine outlet picks, including a lamp, linen quilt, sleeper sofa, and more, with savings up to 70 percent off.—
Maggie Horton,
People.com,
6 Apr. 2025
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On Upolu, the nation’s most populous island frequented by tourists for its white sand beaches, some have reverted to using kerosene lamps at night and are struggling to keep their food frozen – as rolling power outages leave them without electricity for hours each day.—
Todd Symons,
CNN Money,
3 Apr. 2025
Noun
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Critics have long said there is low pedestrian visibility at the crosswalk and that the flashing lights don’t stay active long enough for people to cross safely.—
Ashley Mackin Solomon,
San Diego Union-Tribune,
7 Apr. 2025
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In a year when teams may view prospects 11 through 40 on their boards in similar light, Seattle can take advantage of its surplus capital to trade up early in the second round and acquire an impact player.—
Michael-Shawn Dugar,
New York Times,
7 Apr. 2025
Noun
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Save on patio furniture sets, outdoor lighting, rugs, and more must-haves this month.—
Isabel Garcia,
People.com,
4 Apr. 2025
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Outdoor space: The owners spent more than $348,000 on outdoor lighting and landscaping, planting Norway Spruce and White Pine trees.—
Michael Kaminer,
New York Times,
4 Apr. 2025
Noun
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This can be particularly functional outdoors, where wind can quickly blow out your flame (just be sure to use a cloche that is specifically suited for use with a lit candle).—
Patricia Shannon,
Better Homes & Gardens,
8 Apr. 2025
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The proud dad could be seen sitting next to his daughter Carmen, 11, and in front of a birthday cake with candles, chiming in as his brood serenaded him.—
Hannah Sacks,
People.com,
7 Apr. 2025
Cite this Entry
“Illuminant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illuminant. Accessed 16 Apr. 2025.
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