1540s, "matter which settles by gravity to the bottom of water or other liquid," from French sédiment (16c.) and directly from Latin sedimentum "a settling, sinking down, subsidence," from stem of sedere "to settle, sit" (from PIE root *sed- (1) "to sit"). Especially in geology after 1680s.
updated on April 07, 2022
Dictionary entries near sediment