n.
A sedimentary material consisting of very fine particles intermediate in size between sand and clay.
v., silt·ed, silt·ing, silts. v.intr.
To become filled with silt: an old channel that silted up.
v.tr.
To fill, cover, or obstruct with silt: River sediments gradually silted the harbor.
[Middle English cylte, probably of Scandinavian origin.]
siltation silt·a'tion n.silty silt'y adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
