alteration UK /ɒl.tə(ɹ)ˈeɪ.ʃən/US /ɔl.tɚˈeɪ.ʃən/ noun3 •The act of altering or making different.…alteration, though it be from worse to better, hath in it inconveniences… — 1594 •A minor adjustment to clothing, such as hemming or shortening, to make it fit better. •The state of being altered; a change made in the form or nature of a thing; a changed condition.The doctors don't see any alteration in the patient's condition. formsalterations