noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An SI unit of electric current equal to 10⁻¹⁸ amperes. Symbol: aA

Synonyms

All synonyms

aaaaattoamp

Etymology

From atto- + ampere.

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