1. the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality;

[syn: factor of proportionality, constant of proportionality]

WordNet (r) 3.0 (2006):

constant of proportionality n 1: the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality [syn: factor of proportionality, constant of proportionality]