noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A billionth of a millionth (10⁻¹⁵) of an ampere. Symbol: fA

Synonyms

All synonyms

femtoamp

Etymology

From femto- + ampere.

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