Ephemeral
Ephemeral , adjective
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.
Sentences not of ephemeral, but of eternal, efficacy.
Collocations (1)
Ephemeral fly (Zoology) , 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 larva are aquatic; -- called also day fly and May fly.
Ephemeral , noun
Anything lasting but a day, or a brief time; an ephemeral plant, insect, etc.