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Related to prolongation: QT prolongation


 (prə-lông′gāt′, -lŏng′-, prō-)
tr.v. pro·lon·gat·ed, pro·lon·gat·ing, pro·lon·gates
To prolong.

pro′lon·ga′tion (prō′lông-gā′shən, -lŏng-) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌproʊ lɔŋˈgeɪ ʃən, -lɒŋ-)

1. the act of prolonging.
2. the state of being prolonged.
3. a prolonged or extended form.
4. an added part.
[1480–90; < Late Latin]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.prolongation - the act of prolonging something; "there was an indefinite prolongation of the peace talks"
continuance, continuation - the act of continuing an activity without interruption
2.prolongation - amount or degree or range to which something extends; "the wire has an extension of 50 feet"
longness - the property of being of long spatial extent; "one gene causes shortness and the other causes longness"
coextension - equality of extension or duration
3.prolongation - the consequence of being lengthened in duration
length, duration - continuance in time; "the ceremony was of short duration"; "he complained about the length of time required"
fermata - (music) a prolongation of unspecified length on a note or chord or rest
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


The act of making something longer or the condition of being made longer:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


[ˌprəʊlɒŋˈgeɪʃən] Nprolongación f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


nVerlängerung f; (unpleasant: of process, pain) → Hinauszögern nt; (Fin, of draft) → Prolongation f, → Prolongierung f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[ˌprəʊlɒŋˈgeɪʃn] nprolungamento
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(prəˈloŋ) verb
to make longer. Please do not prolong the discussion unnecessarily.
prolongation (prouloŋˈgeiʃən) noun
proˈlonged adjective
very long. prolonged discussions.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.


n. prolongación, extensión.
English-Spanish Medical Dictionary © Farlex 2012
References in classic literature ?
Frederica's visit was nominally for six weeks, but her mother, though inviting her to return in one or two affectionate letters, was very ready to oblige the whole party by consenting to a prolongation of her stay, and in the course of two months ceased to write of her absence, and in the course of two or more to write to her at all.
An ambitious man, too, when he found himself seated on the summit of his country's honors, when he looked forward to the time at which he must descend from the exalted eminence for ever, and reflected that no exertion of merit on his part could save him from the unwelcome reverse; such a man, in such a situation, would be much more violently tempted to embrace a favorable conjuncture for attempting the prolongation of his power, at every personal hazard, than if he had the probability of answering the same end by doing his duty.
"Oh, as for that," said Danglars, angry at this prolongation of the jest, -- "as for that you won't get them at all.
Soon, other evidences of our vicinity to the land were apparent, and it was not long before the glad announcement of its being in sight was heard from aloft,--given with that peculiar prolongation of sound that a sailor loves--'Land ho!'
The same delicacy, pride, false shame, whatever it may be called, on Clare's account, which had led her to hide from her own parents the prolongation of the estrangement, hindered her owning to his that she was in want after the fair allowance he had left her.
But, considering how near the black curtain had been to falling over the adventurous drama of my life, had I any right to complain of the prolongation of the scene, however darkly it might look at first?
There was, on the contrary, an irritating prolongation. The tale had created in him a great concern for himself.
The wave of warmth that went through him was like the prolongation of his vision.
There were engraved portraits of Lord Chancellors and other celebrated lawyers of the last century; and there were old pier-glasses to reflect them, as well as the little satin-wood tables and the sofas resembling a prolongation of uneasy chairs, all standing in relief against the dark wainscot This was the physiognomy of the drawing-room into which Lydgate was shown; and there were three ladies to receive him, who were also old-fashioned, and of a faded but genuine respectability: Mrs.
Round every knob and cushion in the house sentiment gathered, a sentiment that was at times personal, but more often a faint piety to the dead, a prolongation of rites that might have ended at the grave.
Mr List's squint assumed a portentous character, which seemed to threaten a prolongation of this controversy, when his companion, who had been looking sharply at the old man, put a timely stop to it.
Round went the busily revolving machinery, kept in motion by the scissor-grinder's foot, and wore away the hard steel against the hard stone, whence issued an intense and spiteful prolongation of a hiss as fierce as those emitted by Satan and his compeers in Pandemonium, though squeezed into smaller compass.