The Collaborative International Dictionary of English v.0.48:

Elapse \E*lapse"\, v. i. [imp. & p. p. Elapsed; p. pr. & vb.
   n. Elapsing.] [L. elapsus, p. p. of elabi to glide away; e
   out + labi to fall, slide. See Lapse.]
   To slip or glide away; to pass away silently, as time; --
   used chiefly in reference to time.
   [1913 Webster]

         Eight days elapsed; at length a pilgrim came. --Hoole.
   [1913 Webster]

WordNet (r) 3.0 (2006):

elapse
    v 1: pass by; "three years elapsed" [syn: elapse, lapse,
         pass, slip by, glide by, slip away, go by, slide
         by, go along]

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "elapse":
   advance, be all over, be gone, be past, continue, die, disappear,
   endure, expire, flit, flow, flow on, fly, glide, go, go by, go on,
   have run out, lapse, last, pass, pass away, pass by, press on,
   proceed, roll on, run, run its course, run on, run out, slide,
   slip, slip away, slip by, transpire