IPA: /ˈsɛn.tər.ɪŋ/
KK: /ˈsɛntərɪŋ/
A structure used to support an arch, vault, or dome while it is being built, often made of wood.
The workers carefully set up the centering to ensure the arch would hold its shape during construction.
Centering → It is formed from "center" (from Latin "centrum", meaning the middle point) and "-ing" (a suffix used to indicate the action or process of). The word "centering" refers to the action or process of bringing something to the middle point or focus.
Think of the word 'center' as the middle point, and remember that 'centering' means the action of bringing something to that middle point.