The story
By surface analysis, dia- (“through”) + miction (“urination”).
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A terrigenous sediment that is unsorted to poorly sorted and contains particles ranging in size from clay to boulders, suspended in an unconsolidated matrix of mud or sand. Full definition →
By surface analysis, dia- (“through”) + miction (“urination”).
Etymology from Wiktionary, CC BY-SA 4.0.