The name Thursday is derived from the Old English Þūnresdægand the Middle English Thuresday (with loss of -n-, first in northern dialects, from the influence of Old Norse Þorsdagr) meaning “Thor’s Day,” after the Norse God of Thunder and son of Odin, Thor. Many Germanic-derived languages name Thursday after Thor, like “Torsdag” in Denmark, Norway, and Sweden, “Donnerstag” in Germany, and “Donderlag” in the Netherlands.