recension

noun

1. 1

   A census, an enumeration, a review, a survey.

2. 2

   A critical revision of a text.

3. 3

   A text established by critical revision.

4. 4

   A family of manuscripts which share similar traits; the variety of a language which is used in such manuscripts.

   “The Russian recension of Old Church Slavonic emerged after the 10th century and was characterized by the substitution of /u/ for the nasal sound /õ/.”