fundamental quantity(n = noun.quantity) fundamental measure - one of the four quantities that are the basis of systems of measurement;
is a kind of amount, measure, quantity
has particulars: temperature, mass, length, period, period of time, time period

complex quantity, constant quantity, definite quantity, fundamental, fundamental frequency, fundamental interaction, fundamental law, fundamental measure, fundamental particle, fundamental principle, indefinite quantity, large indefinite quantity, numerical quantity, parametric quantity, prime quantity, quantity, quantity unit, relative quantity, small indefinite quantity, unknown quantity, variable quantity