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progradation

American  
[proh-grey-dey-shuhn] / ˌproʊ greɪˈdeɪ ʃən /

noun

Geology.

  1. 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.

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