What does centring mean?
Centring refers to the act of placing something at, or directing it toward, a central point — whether a physical object, an argument's emphasis, or a person's attention. It carries a neutral, often technical tone: one might speak of the centring of power in a government, the centring of a design element on a page, or the centring of a community's efforts on a shared goal. In architecture and building, the word has a second, highly specific meaning: the temporary timber or steel framework erected beneath an arch or vault to support the stones until the mortar sets and the structure becomes self-supporting. This scaffolding, once removed, leaves no trace, yet without it no true arch could be built. Centring derives from the Latin centrum, meaning the sharp point of a drafting compass, which gave English both 'centre' and a family of related terms. The British spelling with '-re-' distinguishes it from the American 'centering', though the two are identical in meaning and pronunciation.
The act or process of placing something at the centre, or focusing attention or activity on a central point.
"The centring of the exhibition on local history drew record crowds."
A temporary framework of timber or steel built to support an arch or vault during construction until it becomes self-supporting.
"The masons waited three weeks before striking the centring beneath the bridge's main arch."
This sense is chiefly used in masonry, restoration, and civil engineering contexts.
Before a stone arch can hold itself up, it needs a humble timber skeleton called centring — remove it too soon and centuries of masonry come crashing down.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of centring
Centring comes from 'centre', borrowed into English from Old French in the Middle Ages, which in turn descends from Latin centrum, originally the fixed point of a drafting compass. The noun centring was formed by adding the suffix -ing to denote the action or result of the verb 'to centre'. Its architectural sense — the temporary support for an arch — developed within English building practice. Cognate terms sharing the Latin root include central, eccentric, and centrifugal.
Related word forms
How centring is actually used
In everyday use, 'centring' is largely a formal or technical noun; writers more often use verbal constructions such as 'focusing on'. The masonry sense is specialist vocabulary among builders and conservators. Note that the American spelling 'centering' is far more common globally.
Easily confused with centring
Centering is simply the American spelling of the same word; 'centring' is the standard British spelling.
Sentencing means imposing a legal punishment, whereas centring concerns placing something at a centre or supporting an arch during construction.