IPA: /sʌb.kəˈmɪʃ.ən/
KK: /sʌbˌkəˈmɪʃən/
A smaller group that is part of a larger committee or organization, often created to focus on specific tasks or issues.
The subcommission was formed to address environmental concerns within the larger committee.
Subcommission → It is formed from "sub-" (meaning under or below) and "commission" (from Latin "commissio", meaning to entrust or to send). The word refers to a body that is entrusted with authority or responsibility under a larger commission.
Think of being 'under' ('sub-') a larger group that has been 'entrusted' ('commission') with a task — that's what a subcommission is.