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Pronunciation varies by accent · noun
(metrology) An SI unit of energy, work, and heat equal to 10⁻¹⁵ joules. Symbol: fJ.
Use femtojoule when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Femtojoule means (metrology) An SI unit of energy, work, and heat equal to 10⁻¹⁵ joules. Symbol: fJ.
Common synonyms include fJ.
The opposite depends on the specific sense.
Use femtojoule where its definition matches the intended context.
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