1.
[syn: fleeting, fugitive, momentaneous, momentary]
The Collaborative International Dictionary of English v.0.48:
Momentaneous \Mo`men*ta"ne*ous\, Momentany \Mo"men*ta*ny\, a.
[L. momentaneus: cf. F. momentan['e].]
Momentary. [Obs.] --Hooker. "Momentany as a sound." --Shak.
[1913 Webster]
WordNet (r) 3.0 (2006):
momentaneous
adj 1: lasting for a markedly brief time; "a fleeting glance";
"fugitive hours"; "rapid momentaneous association of
things that meet and pass"; "a momentary glimpse" [syn:
fleeting, fugitive, momentaneous, momentary]