'Fluvial' definitions:

Definition of 'fluvial'

From: WordNet
adjective
Of or relating to or happening in a river; "fluvial deposits"

Definition of 'Fluvial'

From: GCIDE
  • Fluvial \Flu"vi*al\, a. [L. fluvialis, from fluvius river, fr. fluere to flow: cf.F. fluvial. See Fluent.] Belonging to rivers; growing or living in streams or ponds; as, a fluvial plant. [1913 Webster]