fugacious

Adjective

Synonyms: ephemeral passing short-lived transient transitory

WordNet 3.0

Adjective (1)

lasting a very short time“the ephemeral joys of childhood”“a passing fancy”“youth's transient beauty”“love is transitory but it is eternal”“fugacious blossoms”Synonyms: ephemeral passing short-lived transient transitory

Webster's Dictionary (GCIDE)

Fugacious \Fu*ga"cious\, a. [L. fugax, fugacis, from fugere: cf. F. fugace. See Fugitive.]

1.Flying, or disposed to fly; fleeing away; lasting but a short time; volatile. [1913 Webster]

Much of its possessions is so hid, so fugacious, and of so uncertain purchase.— Jer. Taylor.[1913 Webster]

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. [1913 Webster]