IPA: /ˈɒf.ə.tɔː.ri/
KK: /ˈɔfərˌtɔri/
A collection of gifts or donations made during a religious service, often to support the church or its activities.
During the service, the offertory was collected to help fund community programs.
Offertory is formed from "offer" (from Latin "offerre", meaning to present or bring forth) and the suffix "-ory" (meaning relating to or connected with). The word "offertory" refers to the part of a church service where offerings are presented or collected.
Think of 'offering' something — 'offer' means to present, and '-ory' indicates a related action. This helps you remember that 'offertory' is the time when offerings are presented.