illuminant

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noun il·lu·mi·nant \i-ˈlü-mə-nənt\

Definition of illuminant

  1. :  an illuminating device or substance

Examples of illuminant in a Sentence

  1. at the time, a spermaceti candle was the brightest indoor illuminant available

Recent Examples of illuminant from the Web

  • Many others had restrained trade by putting out oil which prejudiced the people against kerosene oil, as it was termed, as an illuminant, because of poor quality and consequent great danger.

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'illuminant'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of illuminant

1644


Medical Dictionary

illuminant

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noun il·lu·mi·nant \-nənt\

Medical Definition of illuminant

  1. :  an illuminating device or substance (as for a microscope)


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