Source : Webster's Revised Unabridged Dictionary (1913)

Masora \Ma*so"ra\, n. [NHeb. m[=a]s?r[=a]h tradition.]
   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}.]

Source : WordNet®

Masorah
     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: {Masora}]