femtojoule 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 joule English femtojoule From femto- + joule.
Meanings
- An SI unit of energy, work, and heat equal to 10⁻¹⁵ joules. Symbol: fJ
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| femtojoules | Number=Plur | lexicographic |
Synonyms
fJ (Symbol)