prolongation

The act of prolonging, or lengthening in time or space: as, the prolongation of a line.

A part prolonged; an extension: as, the prolongation of a mountain-range.

Extension of time by delay or postponement.

The act of lengthening in space or in time; extension; protraction.

That which forms an additional length.

The act of prolonging.

That which has been prolonged; an extension.

amount or degree or range to which something extends

the act of prolonging something

the consequence of being lengthened in duration