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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The lamp's delicate daisy decoration instantly evokes seasonal warmth and is topped with a linen lampshade.—
Nora Colomer,
FOXNews.com,
17 Apr. 2025
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The forest was a medical instrument, too—as much a part of the hospital’s architecture as any lamp or chair.—
Michael Snyder,
Travel + Leisure,
14 Apr. 2025
Noun
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For the most recent discovery, a team of researchers used a different instrument outfitted to Webb to study the light from K2-18b's parent star as the planet passed in front of it from Earth's vantage.—
Eric Lagatta,
USA Today,
19 Apr. 2025
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But Kerr has won four championships and has repeatedly proven himself under the brightest lights.—
Joseph Dycus,
Mercury News,
19 Apr. 2025
Noun
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Raw images also show a vignette from f/1.2-2, which makes corners appear to be darker than the center in scenes with even lighting.—
PC Magazine,
PC Magazine,
16 Apr. 2025
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The visitor’s center also has newly installed low-flow plumbing fixtures, energy-efficient windows, and LED lighting.—
Mariette Williams,
Travel + Leisure,
16 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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Often these puzzling areas create room for vignettes, an expressive grouping — of candles, plants or photos in a nook intended for deep conversations.—
Kathryn Streeter,
USA Today,
7 Apr. 2025
Cite this Entry
“Illuminant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illuminant. Accessed 24 Apr. 2025.
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