n. (Zool.) A neuropterous insect of the genus Ephemera and related genera, of many species, and inhabiting fresh water in the larval state; the ephemeral fly; -- so called because it commonly lives but one day in the winged or adult state. See Ephemeral fly, under Ephemeral. [ 1913 Webster ]
English-Thai: NECTEC'sLexitron-2 Dictionary [with local updates]NECTEC Lexitron Dictionary EN-TH
(n)slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days, Syn.dayfly, shadfly