Centering is a method of determining the approximate location of a pipeline leak. Technically speaking: The process of approximating the location of a pipeline leak. Centering can be done manually using gas detection equipment, such as acoustical equipment, or through a more sophisticated SCADA-based leak detection system using mathematical modelin [..]

n. in sports psychology, refers to a technique that enhances athletic peformance. It instructs and assists athletes on how to focus on a strong point (the spot) in the body and to imagine being in tha [..]

Sport psychology. Technique assisting in athletes to acheive the ideal performance that involves focusing on a spot in the body's centre and imagining being in that state.

Temporary formwork for the support of masonry arches or lintels during construction. Also called center (s).

Temporary framework to support arch or vault during construction.    (Wood, Margaret. The English Medieval House, 410)

(n) the concentration of attention or energy on something(n) (American football) putting the ball in play by passing it (between the legs) to a back

In a multiple output power supply it is sometimes awkward to have every output voltage spot-on. Power supply centering refers to this. This is often due to things like needing a full integer wind on a [..]

Also known by centration or decenter, it is specified in terms of beam deviation. The amount of decenter is the physical displacement of the mechanical axis from the optical axis. 

Figuratively, to find one's balance.  To center one's awareness.