femtovolt femtosecond • femur · · · Info · Definitions · Characters · · femtovolt · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) a unit of potential equal to one quadrillionth of a volt (or one thousandth of a nanosecond). · · Noun Definition 1 Characters · · e latin small letter e U+0065 f latin small letter f U+0066 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F t latin small letter t U+0074 v latin small letter v U+0076