diachronism

British

/ daɪˈækrəˌnɪzəm /

noun

geology the passage of a geological formation across time planes, as occurs when a marine sediment laid down by an advancing sea is noticeably younger in the direction of advancement

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

diachronous

adjective

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023