From Old French alteracion (French altération), from Medieval Latin alterātiō.

Morphologically alter + -ation

• (British) IPA: /ɒl.tə(ɹ)ˈeɪ.ʃən/
• (America) IPA: /ɔl.tɚˈeɪ.ʃən/
• (cot-caught) IPA: /ɑl.tɚˈeɪ.ʃən/

alteration

1. The act of altering or making different.
   • 1594, Richard Hooker, Of the Laws of Ecclesiastical Polity:

     …alteration, though it be from worse to better, hath in it inconveniences…

   1. A minor adjustment to clothing, such as hemming or shortening, to make it fit better.
2. The state of being altered; a change made in the form or nature of a thing; a changed condition.
   • 1892, Arthur Conan Doyle, “The Resident Patient”, in The Memoirs of Sherlock Holmes:

     …and I saw by the alteration in your face that a train of thought had been started.

• French: altération, altérer
• German: Änderung, Veränderung
• Italian: alterazione
• Portuguese: alteração
• Russian: измене́ние
• Spanish: alteración, cambio, modificación

• French: altération
• Italian: alterazione
• Portuguese: alteração
• Russian: переду́мывание
• Spanish: alteración