Obs. rare. [as if ad. L. *ēlapsiōn-em, f. ēlābi: see ELAPSE v. and -ION.] The action of elapsing or slipping away, the state of having elapsed; (in quot.) subsidence.
1656. Blount, Glossogr.
1678–1706. in Phillips.
1721–82. in Bailey.
1799. Kirwan, Geol. Ess., 37. The dissolution, elapsion, or different compression of some of these strata.
