: any of various winged nocturnal beetles (especially family Lampyridae) that produce a bright soft intermittent light by oxidation of luciferin especially for courtship purposes
Illustration of firefly
Examples of firefly in a Sentence
Recent Examples on the WebThat’s why each type of firefly has its own unique flash color and/or pattern.—Bob Hirshon, Discover Magazine, 6 June 2024 Lit plots had significantly more firefly visitors, but not a single male or female in these plots flashed—not even once.—Lee Alan Dugatkin, Scientific American, 14 May 2024 Threats facing fireflies Fireflies need moisture in each of their life cycles, Lewis said.—Aliza Chasan, CBS News, 7 June 2024 Submit your firefly observations to help project scientists monitor populations of these extraordinary insects.—Bob Hirshon, Discover Magazine, 6 June 2024 See all Example Sentences for firefly
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'firefly.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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