as in lamp
something that provides illumination
at the time, a spermaceti candle was the brightest indoor illuminant available
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Example Sentences
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Recent Examples of illuminant
Related Stories For the Judge LED, users can choose seven light sources from a selection of different temperatures that fit industry standards, including a directional daylight output with the standard illuminant D65.
—
Sarah Jones, Sourcing Journal, 16 Jan. 2025
Distilling rock oil produced multiple interesting compounds, one of which looked like an ideal illuminant.
—Charles R. Morris, WSJ, 21 June 2018
Sarah Jones, Sourcing Journal, 16 Jan. 2025
Distilling rock oil produced multiple interesting compounds, one of which looked like an ideal illuminant.
—Charles R. Morris, WSJ, 21 June 2018
Recent Examples of Synonyms for illuminant
Noun
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Rectangular lamps were fixed at regular intervals between the pillars, and green metal railings lined the gaps to keep people from falling into the water.—
Literary Hub,
Literary Hub,
11 June 2026
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Sometimes the cords on your lamp, TV or power tools just won’t reach.—
Lew Sichelman,
Miami Herald,
11 June 2026
Noun
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Lamps can also create a more relaxed atmosphere in the evenings, when bright overhead lights often feel too harsh.—
Natasha Bazika,
Martha Stewart,
14 June 2026
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All of which casts the UFC fights for America's 250th birthday in a different light, says Zelizer.—
Danielle Kurtzleben,
NPR,
14 June 2026
Noun
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Warm lighting enhances natural materials, brings out the richness of colors, and helps rooms feel more comfortable from dawn to dusk.—
Natasha Bazika,
Martha Stewart,
14 June 2026
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There’s random rough-sawn wood on the kitchen ceiling, a deer head hanging in the living room, and different styles of lighting in every room.—
Clio Chang,
Curbed,
14 June 2026
Noun
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This isn't the first time that ALDI has released an icon candle of its own.—
Sophia Beams,
Better Homes & Gardens,
17 June 2026
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The family dramas and professional scheming can’t hold a candle to Succession.—
Angie Han,
HollywoodReporter,
16 June 2026
Cite this Entry
“Illuminant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illuminant. Accessed 18 Jun. 2026.
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