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Rosh Hodesh

or Rosh Cho·desh

[rohsh khoh-desh; Ashkenazic Hebrew rohsh khoh-desh; Sephardic Hebrew rawsh khaw-desh]
noun Judaism.
  1. the beginning of a new month in the Jewish calendar, celebrated in a specified manner during the morning service in the synagogue.
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Origin of Rosh Hodesh

From the Hebrew word rōsh ḥōdhesh literally, beginning of the new moon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for rosh chodesh

Rosh Chodesh

noun
  1. Judaism the first day of a new month, coinciding usually with the new moon, and also the preceding day if the previous month has 30 days, observed as a minor festivalSee also Jewish calendar
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Word Origin for Rosh Chodesh

from Hebrew, literally: the beginning of the new moon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012