Centering vs. Centring

Centeringnoun

(countable) A type of formwork which serves as a temporary structure during the construction of arches and bridges.

Centeringnoun

The process of moving something to a centre, normally before some other process.

Centeringnoun

Same as Center, n., 6.

Centeringnoun

the concentration of attention or energy on something;

Centeringnoun

(American football) putting the ball in play by passing it (between the legs) to a back;

Centringnoun

See Centring.

Centring

Centring, centre, centering, or center is a type of formwork: the temporary structure upon which the stones of an arch or vault are laid during construction. Until the keystone is inserted an arch has no strength and needs the centring to keep the voussoirs in their correct relative positions.