progradation
American
[proh-grey-dey-shuhn]
/ ˌproʊ greɪˈdeɪ ʃən /
noun
Geology.
-
seaward growth of a beach, delta, fan, etc., by progressive deposition of sediment by rivers or shoreline processes.
Etymology
Origin of progradation
1905–10; prograde ( pro- 1 + (retro)grade ) + -ation
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.