[n. of action f. L. crustāre to CRUST: see -ATION.] The formation of a crust; an incrustation.
1620–55. I. Jones, Stone-Heng, 37. These, having through long time, got the very same crustation upon them.
1698. Keill, Exam. Th. Earth (1734), 235. The Abyss was enclos’d by a thick Crustation, in which were all the Materials of Earth, Sand, Clay, Gravel [etc.].
1870. Eng. Mechanic, 21 Jan., 463/1. To attempt to remove crustations.
