corrasion

Noun

corrasion (usually uncountable, plural corrasions)

1. (obsolete, usually) The diminution of wealth, etc., such as through unanticipated expenditure.
   • Theſe and other importunate corraſions, vvere not made onely to fill vp ſuch breaches as the French affaires had produced, but alſo to ſpend in entertainments and ſhovves.1611, Iohn Speed [i.e., John Speed], “Henry the Third, […]”, in The History of Great Britaine under the Conquests of yͤ Romans, Saxons, Danes and Normans. […], London: […] William Hall and John...
2. (usually) The wearing away of surface material.
   • In contrast, Spinocyrtia pedicle valves displayed a wide range of corrasion states, including extremely worn partial valves lacking any hint of ribbing and with edges, including fractured edges, rounded (Figs. 1, 2 B-E).1991, Carlton E. Brett, Yvette L. Bordeaux, “Taphonomy of brachiopods from a Middle Devonian shell bed”, in D. I. MacKinnon, Daphne E. Lee, J. D. Campbell, editors, Brachiopods Through Time, page 221
   • Accurate data on the rate of corrasion would be very helpful in determining whether treatment is an urgent priority.
   • Overstatement of corrasion is largely due to the assumption that the height of nails above the timber surface indicate^([sic]) the extent of erosion of the wood surface.2000, Janet D. Hughes, “Conservation Investigation for Preservation of Historic Timber Hut in Antarctica”, in Stephen J. Kelley, editor, Wood Structures: A Global Forum on the Treatment...
3. (usually) Corrading (erosion by abrasion) caused by such as: wind-blown or water-borne sand, stream-borne or glacier-borne stones, or collisions between stones under the influence of seaside breakers.
   • But the character of the deposit on these benches shows that it could not have accumulated under such conditions as must have existed had the plains resulted from lateral corrasions by streams with but slight fall.1880, Proceedings, Volume 18, American Philosophical Society, page 311
   • Corrasion may be vertical or lateral. Vertical corrasion is corrasion of the bed of the river, deepening its channel. Lateral corrasion is corrasion of the banks, and leaves the bed untouched.1993, Shatrughna Prasad Sinha, Faguni Ram, Manager Prasad, Hari Ram Nagalia, editors, Instant Encyclopaedia of Geography, Volume 8: Environmental Geography, Mittal Publications, page 104