apportionment noun3 •The act of apportioning or the state of being apportioned.The names of the prayers are given above the tunes, but there is no indication of apportionment of the text to the phrases and notes of the melody. — 1929 •(US) The distribution of members of the House of Representatives according to the population of the various states. •(US) The allocation of direct taxation according to the population of the various states. formsapportionments