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In all the world, Seder (Seder , 塞德 , סדר ) is a rare masculine first name. The forename Seder is habitual in the Democratic Republic of the Congo, where it is a rare masculine name, Saudi Arabia, where it is a very rare boy's name, and Turkey, where it is a very rare gender-neutral name. More frequently, Seder is the last name as well as the forename.