IPA: /ˌoʊ.ɪˈnɒl.ə.dʒɪ.kəl/
KK: /oʊˈɪnəˌlɒdʒɪkəl/
Relating to the study of wine and winemaking.
She took an oenological course to learn more about wine production.
Oenological → It is formed from "oenology" (from Greek "oinos", meaning wine, and "logia", meaning study or science) and the suffix "-ical" (meaning pertaining to). The word "oenological" refers to anything pertaining to the study or science of wine.
Think of 'oinos' meaning wine and 'logia' meaning study — so oenological relates to the study of wine.