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/ˈfaɪ.əˌflaɪ/ · noun
(Northern US, Western US, Florida) Any beetle of the family Lampyridae, which exhibit bioluminescence during twilight..
2000, Exploring Life Science, 2: Bats—Cave Life, Marshall Cavendish, page 96, Fireflies are the best-known insects that produce light. […] Many fireflies use their light to communicate, particularly at mating time when males and females have to get together.
The luciferins are different in different species and today both the luciferin and luciferase in the firefly are available in the crystalline form.
Various other luciferase genes, especially the firefly luciferase gene, are also used for the study of gene regulation.[…]The classic use of bioluminescence, however, is the use of a luciferin-luciferase mixture from fireflies as an assay for ATP.
Use firefly when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Firefly means (Northern US, Western US, Florida) Any beetle of the family Lampyridae, which exhibit bioluminescence during twilight..
Common synonyms include lightning beetle, lightning bug, glow fly, fire beetle.
The opposite depends on the specific sense.
2000, Exploring Life Science, 2: Bats—Cave Life, Marshall Cavendish, page 96, Fireflies are the best-known insects that produce light. […] Many fireflies use their light to communicate, particularly at mating time when males and females have to get together.
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