elapse (v.) Look up elapse at Dictionary.com
1640s, from Middle French elapser, from Latin elapsus, past participle of elabi "slip or glide away, escape," from ex "out, out of, away" (see ex-) + labi "to slip, glide" (see lapse (n.)). The noun now corresponding to elapse is lapse, but elapse (n.) was in recent use. Related: Elapsed; elapsing.