fluviation

== English == === Etymology === From Latin fluviātiō, from fluviātus (“fluviated”) + -iō (“-tion: forming abstract nouns”), from fluvius (“river”) + -ātus (“-ate: forming adjectives”) as if from a verb fluviō. Equivalent to fluviated +‎ -ion. === Noun === fluviation (usually uncountable, plural fluviations) (geology) Deposition of silt etc. by the action of a river or stream. (obsolete) Preparation of flax by soaking it in a stream. === References === “† fluviation, n.”, in OED Online ⁠, Oxford: Oxford University Press, 2023.