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

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

noun. Extension of time by delay or postponement.

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

noun. That which forms an additional length.

noun. The act of prolonging.

noun. That which has been prolonged; an extension.

noun. amount or degree or range to which something extends

noun. the act of prolonging something

noun. the consequence of being lengthened in duration

"This results in prolongation of half-life from 0.8 hours in healthy subjects to 1.3 hours in patients with moderate hepatic impairment and 2.4 hours in severely impaired patients."

addition  extension  

continuance  continuation  

cessation  continuance  continuation  discontinuance  perpetuation  

adjournal  adjournment  coming after  consecution  consecutiveness