from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Judaism The feast commemorating the exodus of the Jews from Egypt, celebrated on the first night or the first two nights of Passover.
from The Century Dictionary and Cyclopedia
- n. The order of the service and feast on the first night of the Jewish Passover, repeated on the second night by those who keep the Second day.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (Judaism) the ceremonial dinner on the first night (or both nights) of Passover
Hebrew sēder, order, arrangement, Seder; see sdr in Semitic roots.(American Heritage® Dictionary of the English Language, Fourth Edition)