IPA: /ˈoʊpənɪŋ/
KK: /ˈoʊpənɪŋ/
A space or gap that allows access or passage, or the beginning of an event or activity.
The opening of the new park was celebrated with a big ceremony.
Opening → It is formed from "open" (from Old English *openian*, meaning to make or become open) and "-ing" (a suffix used to form nouns indicating an action or process). The word "opening" refers to the action or process of making something open or the state of being open.
Think of the action of 'making something open' — that's what 'opening' means.