[proh-lawng-gey-shuh n, -long-]


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

Contemporary Examples of prolongation

Historical Examples of prolongation

  • They were thus formed with their line of retreat in prolongation of their front.

  • Geographically it is simply the prolongation of the Venetian plain.

  • It has been one of the main causes of the prolongation of the war.


    John French, Viscount of Ypres

  • The antique bed must be considered as the prolongation of the diphros.

  • Von Rittenheim was delighted at the prolongation of his happiness.

    A Tar-Heel Baron

    Mabell Shippie Clarke Pelton

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