D defs.my
Entry 1 sense Webster, 1913

Deterioration

/dĭt-ĭr'-ē-ẽr-āshˌ-ən/ · De·te·ri·o·ra·tion · IPA /dəˌti.ɹi.əˈɹeɪ.ʃən/
01 n. The process of growing worse, or the state of having grown worse.
  1. 1.
    The process of growing worse, or the state of having grown worse.