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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These are fantastical pieces, oddly human-like lamps that glow, literally, with toxic beauty.—
Nargess Banks,
Forbes.com,
25 June 2025
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Then, simply paint your favorite shade of gel nail polish onto your nails (feel free to add chrome powder on top for a more dimensional look), cure it under the UV lamp, and paint a layer of top coat on.—
Catharine Malzahn,
Glamour,
24 June 2025
Noun
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The celebrated Scottish film and screen actor, who was regarded as one of the brightest lights of his generation, died at the age of 40 from AIDS in 1990, and asked that the cause of his death be publicized to promote awareness and acceptance of the illness.—
Melanie Goodfellow,
Deadline,
30 June 2025
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And yet the boundary between death and life, between this world and another, was blurring for both of us in the gray light of London, and my mother’s underlying fear of returning to Kolkata must have been instilling fears in me.—
Jhumpa Lahiri,
New Yorker,
30 June 2025
Noun
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Remember, a tent offers no protection from lighting.—
NC Weather Bot,
Charlotte Observer,
28 June 2025
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Even if on private property in an unincorporated area, there are rules civilians must follow with lighting and exploding fireworks.—
Samara Gerstle,
Fort Worth Star-Telegram,
28 June 2025
Noun
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Sure, hygge has been overused a bit in the last few years (candles, fuzzy socks, etc.), but the real idea behind it is simple: comfort and connection.—
Jordi Lippe-McGraw,
Forbes.com,
1 July 2025
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Staff will take you step by step on how to make the candle of your choice.—
Katie Black,
Charlotte Observer,
27 June 2025
Cite this Entry
“Illuminant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illuminant. Accessed 9 Jul. 2025.
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