[ 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
Related formsnon·pro·lon·ga·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for prolongation

Word Origin and History for prolongation



late 14c., from Old French prolongation (14c.), from Late Lation prolongationem (nominative prolongatio), noun of action from past participle stem of Latin prolongare (see prolong).

Online Etymology Dictionary, © 2010 Douglas Harper