n. [ Etymol. uncertain. ] (Chem.) A hydrocarbon extracted from gutta-percha, as a yellow, resinous substance; -- called also fluanil. [ 1913 Webster ]

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 ]

n. One who exlpains geological phenomena by the action of streams. [ R. ] [ 1913 Webster ]