資料來源 : Webster's Revised Unabridged Dictionary (1913)

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.