femtobel en · NOUN
Etymology
Etymology tree Proto-Indo-European *pénkʷe Proto-Germanic *fimf Proto-Indo-European *déḱm̥ Proto-Germanic *tehun Proto-Germanic *fimftehun Old Norse fimmtánder. Danish femtender. English femto- English bel English femtobel From femto- + bel.
Meanings
- An SI unit of relative power equal to 10⁻¹⁵ bels. Symbol: f
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| femtobels | Number=Plur | lexicographic |
Synonyms
fB (Symbol)