ephemeromorph (efemeromorf)

[ ephemeron (e-fem'e-ron), n.; pl. ephemera (-rä). [NL., If God had gone on still in the same method, and short. ened our days as we multiplied our sins, we should have been but as an ephemeron; man should have lived the life of a fly or a gourd. Jer. Taylor, Works (ed. 1835), I. 256. The ephemeron perishes in an hour; man endures for his threescore years and ten. Whewell.