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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His office also checks for defunct street lights weekly and reports them to the city and San Diego Gas & Electric for replacement, and plans to plant dozens of trees around transit corridors in his district after securing grant funding.—
Tammy Murga,
San Diego Union-Tribune,
13 Apr. 2025
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Red Bull responded by putting a pit crew member in front of the car holding another set of lights ahead of Verstappen’s second stop.—
Luke Smith,
New York Times,
13 Apr. 2025
Noun
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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
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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
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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Also specifically created for the Milan event, a special edition of an Earl Grey tea candle that combines black tea and bergamot oil will come in a lusterware terracotta vessel, brush-painted with iridescent pigment enriched with real gold.—
Sandra Salibian,
Footwear News,
7 Apr. 2025
Cite this Entry
“Illuminant.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/illuminant. Accessed 21 Apr. 2025.
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