IPA: /kənˈvɪkʃən/
KK: /kənˈvɪkʃən/
A strong belief or opinion about something, or a legal decision that someone is guilty of a crime.
Her conviction about the importance of education motivated her to become a teacher.
Conviction is formed from "con-" (meaning together) and "vincere" (meaning to conquer or overcome). The word refers to the state of being firmly convinced or having a strong belief, as if one has conquered doubt.
Think of being 'together' ('con-') in your beliefs, as if you have 'overcome' ('vincere') uncertainty — that's what conviction means.