seder

noun, plural Se·ders, Hebrew Se·da·rim [Sephardic Hebrew se-dah-reem; Ashkenazic Hebrew suh–dah–rim, sey-dah-rim] /Sephardic Hebrew sɛ dɑˈrim; Ashkenazic Hebrew səˈdɑ rɪm, seɪ dɑˈrɪm/. Judaism.

1. a ceremonial dinner that commemorates the Exodus from Egypt and includes the reading of the Haggadah and the eating of symbolic foods, generally held on the first night of Passover by Reform Jews and Jews in Israel and on both the first and second nights by Orthodox and Conservative Jews outside of Israel.

noun

1. Judaism a ceremonial meal with prescribed ritual reading of the Haggadah observed in Jewish homes on the first night or first two nights of Passover

n.home service on the first nights of Passover, 1865, from Hebrew sedher “order, procedure,” related to sedherah “row, rank.”