Femtobecquerel
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 An SI unit of radioactive activity equal to 10⁻¹⁵ becquerels. Symbol: f
Synonyms
All synonymsEtymology
From femto- + becquerel.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.