Ma·so·ra /məˈsorə, ˈsɔr-/
  Ma·so·ra n.  A Jewish critical work on the text of the Hebrew Scriptures, composed by several learned rabbis of the school of Tiberias, in the eighth and ninth centuries. [Written also Masorah, Massora, and Massorah.]
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  Masora
       n : a vast body of textual criticism of the Hebrew Scriptures
           including notes on features of writing and on the
           occurrence of certain words and on variant sources and
           instructions for pronunciation and other comments that
           were written between AD 600 and 900 by Jewish scribes in
           the margins or at the end of texts [syn: Masorah]