Correct spelling for the English word "Abbrevation" is [ɐbɹiːvˈe͡ɪʃən], [ɐbɹiːvˈeɪʃən], [ɐ_b_ɹ_iː_v_ˈeɪ_ʃ_ə_n] (IPA phonetic alphabet).
The word abbrevation does not have an established etymology in the English language as it appears to be a rare or non-standard term. It is likely a combination of abbreviation and the suffix -ation, which is used to form nouns from verbs or to denote an action or process. Abbreviation originated from the Latin word abbreviatio, which means a shortening.