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Definition of Mayfly
1. Noun. Slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days.
Exact synonyms: Dayfly, Shadfly
Generic synonyms: Ephemerid, Ephemeropteran
Group relationships: Ephemeridae, Family Ephemeridae
Generic synonyms: Ephemerid, Ephemeropteran
Group relationships: Ephemeridae, Family Ephemeridae
Definition of Mayfly
1. Noun. Any of many fragile insects, of the order ''Ephemeroptera'', that develop in fresh water, and live very briefly as adults. ¹
¹ Source: wiktionary.com
Definition of Mayfly
1. a winged insect [n -FLIES]