An example of evanescent is a rainbow that appears for only a moment after a storm.
II, The evanescent eleventh somite of the opisthosoma.
Eyes evanescent or absent.
The nervous impulse is, so to say, the sudden evanescent glow of an ember continuously black-hot.
The power of the local sheiks was step by step reduced, till it at last became evanescent - to the unmixed advantage of the whole history.
On the division of the Carolingian realm the part of the province to the east of the river fell to the share of Germany, while that to the west remained with the evanescent kingdom of Lotharingia.