noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A unit of surface area equal to 10⁻⁹ of an acre, or 0.00627264 square inches. humorous

Etymology

From nano- + acre.

Related phrases

square inchsurface area

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.