progradation

== English == === Etymology === Formed as pro- +‎ gradation, after prograde. === Noun === progradation (countable and uncountable, plural progradations) (geology) The growth of a river delta farther out into the sea over time, as it gains more sediment ==== Derived terms ==== progradational === Further reading === progradation on Wikipedia.Wikipedia == French == === Pronunciation === === Noun === progradation f (plural progradations) progradation