Lat. In the civil law. By alluvion, or the gradual and imperceptible increase arising from deposit by water. Per alluvionem id videtur adjici quod ita paulatim adjicitnr nt intelligere non possunvus quantum quoquo momento temporis adjiciatur. That is said to be added by alluvion which is so added little by little that we cannot tell how much is added at any one moment of time. Dig. 41, 1, 7, 1; Fleta, 1. 3, c. 2,