IPA: /kənˈsɪl.jər/
KK: /kənˈsɪlɪər/
Related to a council or a group of people who come together to make decisions.
The conciliar decisions were important for the future of the community.
Conciliar is formed from "con-" (meaning together) and "ciliari" (from Latin "ciliare", meaning to call or summon). The word refers to the act of bringing people together for discussion or resolution.
Think of people coming 'together' ('con-') to 'call' or 'summon' ('ciliari') for a meeting or discussion.