Meaning of PROPORTIONAL in English
adj. & n.
adj. in due proportion; comparable (a proportional increase in the expense; resentment proportional to his injuries).
n. Math. each of the terms of a proportion. proportional representation an electoral system in which all parties gain seats in proportion to the number of votes cast for them. proportionality n. proportionally adv.
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012