1. Temporary or short-lived distinctive characteristics or attributes that exist for a brief period and are subject to rapid change or disappearance
The ephemeral features of the landscape changed dramatically after the storm.
As características efêmeras da paisagem mudaram dramaticamente após a tempestade.
2. In geology or geography: temporary landforms or surface features that exist briefly before being altered or erased
Sand dunes are ephemeral features that shift with wind patterns.
As dunas de areia são características efêmeras que se deslocam com os padrões de vento.
3. In biology or ecology: temporary structural or visible characteristics of organisms or ecosystems
The colorful plumage during mating season represents ephemeral features of many bird species.
A plumagem colorida durante a estação de acasalamento representa características efêmeras de muitas espécies de aves.