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nivartana [Marathi निवर्तन]

Compare Bengali nibarttan.

In India, at least as early as the 12ᵗʰ century – 19ᵗʰ century, a unit of land area. Abbreviated नि (ni)¹. Also nivarttaṇa (निवर्त्तण) and ni-varttana (निवर्त्तन).

1. Shankar Gopal Tulpule and Anne Feldhaus.
A dictionary of old Marathi.
Mumbai: Popular Prakashan, 1999.

sources

Nivarttan, Mar[athi]. (S[anscrit]. निवर्तन, lit., turning back) A measure of land, 20 square Vansas, or 4000 square cubits.

H. H. Wilson, 1855, page 380.

Nivartana is a land-measure containing 400 square poles of ten cubits each, according to the Lílávati.

H. T. Colebrooke.
Miscellaneous Essays, vol 2.
London: Trübner, 1873.
Footnote 3, page 274, commenting upon a copper engraving made in 1137 ce.
A reprinting of an article in Transactions of the Royal Asiatic Society, vol. 1, pages 230-239 and 462-466.