• Main Entry: se·der
• Pronunciation: \ˈsā-dər\
• Function: noun
• Inflected Form(s): plural seders also se·da·rim \sə-ˈdär-əm, ˌse-dä-ˈrēm\
• Usage: often capitalized
• Etymology: Hebrew sēdher order
• Date: 1865

: a Jewish home or community service including a ceremonial dinner held on the first or first and second evenings of the Passover in commemoration of the exodus from Egypt