Masora
noun
Ma·so·ra mə-ˈsȯr-ə 
variants or Masorah
: a body of notes on the textual traditions of the Hebrew Scripture compiled by scribes during the first millennium of the Christian era
Word History
Etymology
Modern Hebrew mĕsōrāh, from Late Hebrew māsōreth tradition, from Hebrew, bond
First Known Use
1659, in the meaning defined above