Definify.com
Webster 1913 Edition
Fugacious
1.
Flying, or disposed to fly; fleeing away; lasting but a short time; volatile.
Much of its possessions is so hid, so fugacious, and of so uncertain purchase.
Jer. Taylor.
2.
(Biol.)
Fleeting; lasting but a short time; – applied particularly to organs or parts which are short-lived as compared with the life of the individual.
Webster 1828 Edition
Fugacious
FUGA'CIOUS
,Adj.