fractionalPronunciation: /ˈfrakʃ(ə)n(ə)l/Definition of fractional adjective 1relating to or expressed as a fraction, especially a fraction less than one: the fractional variance in mass density per unit 2small or tiny in amount:there was a fractional hesitation before he said yes 3 Chemistry relating to or denoting the separation of a mixture into fractions:fractional crystallizationDerivatives fractionally adverb fractional in other Oxford dictionaries Definition of fractional in the US English dictionary
