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
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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Though the area is already filled with natural light, Gaines made sure to include plenty of ambient lighting like candles, lamps, and a tiered accent chandelier.—
Sophia Beams,
Better Homes & Gardens,
11 July 2025
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Once the bulbs are charged, they can be used in a lamp by plugging the socket into a little device that comes with the bulb.—
arkansasonline.com,
arkansasonline.com,
10 July 2025
Noun
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The tool’s powerful suction leaves your floors without a trace of dust thanks to a laser light that highlights tiny specks, and its 60-minute run time allows for extensive cleaning.—
Alyssa Grabinski,
People.com,
12 July 2025
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One of the most common causes of flickering lights is an issue with the bulb.—
Kamron Sanders,
Better Homes & Gardens,
12 July 2025
Noun
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The funding comes through the Airport Improvement Program, which earmarks funds for airport infrastructure projects, like runways, taxiways, noise mitigation, airport signage and airport lighting.—
Lori Weisberg,
San Diego Union-Tribune,
10 July 2025
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Remember, a tent offers no protection from lighting.—
STAR-TELEGRAM WEATHER BOT
Updated July 9,
Fort Worth Star-Telegram,
10 July 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 15 Jul. 2025.
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