[ proh-lawng-gey-shuh n, -long- ]
/ ˌproʊ lɔŋˈgeɪ ʃən, -lɒŋ- /


the act of prolonging: the prolongation of a line.
the state of being prolonged.
a prolonged or extended form.
an added part.

Origin of prolongation

1480–90; < Late Latin prōlongātiōn- (stem of prōlongātiō) extension. See prolongate, -ion

OTHER WORDS FROM prolongation

non·pro·lon·ga·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for prolongation