Obs. rare. [ad. L. aggestiōn-em n. of action, f. agger-ĕre: see AGGEST.] A heaping up; accumulation.
1659. Hammond, On Ps. lxxix. 1. 397. Graves, which are made by aggestion or casting up of earth.
1684. T. Burnet, in Blount’s Nat. Hist. (1693), 443. Factitious Islands … made … by accidental Causes, as the Aggestion of Sands and Sandbeds.
