E*phem"er*al (?), a. 1.
Beginning and ending in a day; existing only, or no longer than,
a day; diurnal; as, an ephemeral flower.
2. Short-lived; existing or continuing for a
short time only. "Ephemeral popularity." V.
Knox.
Sentences not of ephemeral, but of eternal,
efficacy.
Sir J. Stephen.
Ephemeral fly (Zoöl.), one of a
group of neuropterous insects, belonging to the genus Ephemera
and many allied genera, which live in the adult or winged state only
for a short time. The larvæ are aquatic; -- called also day
fly and May fly.
E*phem"er*al, n. Anything lasting
but a day, or a brief time; an ephemeral plant, insect,
etc.