Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


falling headlong; rushing hastily onward; unduly sudden: precipitant decision
Not to be confused with:
precipitate – hasten the occurrence of; to cast, plunge, or send violently; accelerate: precipitate a fight
precipitous – extremely steep; abrupt, sheer: a precipitous slope
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree


1. Rushing or falling headlong.
2. Acting with or marked by impulsiveness in thought or action; rash. See Usage Note at precipitate.
3. Abrupt or unexpected; sudden.
n. Chemistry
A substance that causes a precipitate to form when it is added to a solution.

[Latin praecipitāns, praecipitant-, present participle of praecipitāre, to throw headlong; see precipitate.]

pre·cip′i·tant·ly adv.
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.


1. hasty or impulsive; rash
2. rushing or falling rapidly or without heed
3. abrupt or sudden
(Chemistry) chem a substance or agent that causes a precipitate to form
preˈcipitance, preˈcipitancy n
preˈcipitantly adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(prɪˈsɪp ɪ tənt)

1. hasty, sudden, or headlong; precipitate.
2. Chem. something that causes precipitation.
[1600–10; < Latin praecipitant- (s. of praecipitāns), present participle of praecipitāre to hurl down]
pre•cip′i•tan•cy (-tən si) pre•cip′i•tance, n.
pre•cip′i•tant•ly, adv.
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.precipitant - an agent that causes a precipitate to form
agent - a substance that exerts some force or effect
dimethylglyoxime - a compound used in analysis as a precipitant for palladium or nickel
Adj.1.precipitant - done with very great haste and without due deliberation; "hasty marriage seldom proveth well"- Shakespeare; "hasty makeshifts take the place of planning"- Arthur Geddes; "rejected what was regarded as an overhasty plan for reconversion"; "wondered whether they had been rather precipitate in deposing the king"
hurried - moving rapidly or performed quickly or in great haste; "a hurried trip to the store"; "the hurried life of a city"; "a hurried job"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


2. Happening quickly and without warning:
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.


n(Aus)fällungsmittel nt
adj = precipitate ADJ
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
Where possible, we tried to identify the precipitant as sepsis, noncompliance or other.
"Red meat, corporate body which has the denser cells, constantly moving seaward under its own mass, mixed vessel of oil water precipitant, O Lord, processed + recombined for work.
This study supports research indicating that relational conflicts are key stressors or precipitants. (7) While studies in developed countries found that intimate partner violence was a precipitant for either major depression or suicide attempts and that spousal physical abuse and poor relationships with mothers-in-law were stressors in developing countries, (4,8) such factors have not been found to be precipitants in this study.
By doing so, the governing bodies have endorsed the tradeshow as a gateway to the African market, and a key precipitant of development within in the hospitality industry.
Trauma is a rare precipitant of thyroid storm, accounting for 3.9% of cases in a nationwide survey of Japanese hospitals [9].
It is a major precipitant of people moving from their own home to longterm nursing or residential care.
They assigned a point value to clinical manifestations of the disease, including neurologic manifestations, temperature elevations, tachycardia, atrial fibrillation, gastrointestinal/hepatic symptoms, and precipitant history.
The most common precipitant of HE was electrolytes imbalance in 97 (55%), Hyponatremia in 95(46%), infections in 96(54%), spontaneous bacterial peritonitis (SBP) in 45 (25%), urinary tract infection (UTI) in 41(23%), respiratory tract infection (RTI) in 14 (8%), constipation in 70(39%) and gastrointestinal bleed in 12(7%).
The precipitant was dissolved in 1 ml of 1 M calcium chloride and placed on ice before the addition of absolute ice-cold alcohol.