noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A small set of atoms bound together, measuring between 1 and 100 nanometers.
2. 2
   In reference calcium signalling, is where the calcium-binding proteins (or "sensors") are located within a few nanometers of an open calcium channel.

Etymology

From nano- + domain.

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