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[v. koh-ag-yuh-leyt; adj. koh-ag-yuh-lit, -leyt] /v. koʊˈæg yəˌleɪt; adj. koʊˈæg yə lɪt, -ˌleɪt/
verb (used with object), verb (used without object), coagulated, coagulating.
to change from a fluid into a thickened mass; curdle; congeal:
Let the pudding stand two hours until it coagulates.
Biology. (of blood) to form a clot.
Physical Chemistry. (of colloidal particles) to flocculate or cause to flocculate by adding an electrolyte to an electrostatic colloid.
Obsolete. coagulated.
1350-1400 for earlier past participle senses “solidified, clotted,” 1605-15 for def 1; Middle English < Latin coāgulāt(us) (past participle of coāgulāre), equivalent to coāgul(um) coagulum + -ātus -ate1
Related forms
coagulation, noun
[koh-ag-yuh-luh-tawr-ee, -tohr-ee] /koʊˈæg yə ləˌtɔr i, -ˌtoʊr i/ (Show IPA),
[koh-ag-yuh-ley-tiv, -luh-tiv] /koʊˈæg yəˌleɪ tɪv, -lə tɪv/ (Show IPA),
anticoagulating, adjective
anticoagulation, noun, adjective
noncoagulating, adjective
noncoagulation, noun
noncoagulative, adjective
recoagulate, verb, recoagulated, recoagulating.
recoagulation, noun
uncoagulated, adjective
uncoagulating, adjective
uncoagulative, adjective
1. clot, set, solidify, thicken. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for coagulate
  • Laser beams can be used in surgery to make incisions and coagulate blood.
  • Real human blood is thicker than water and begins to coagulate as soon as it's exposed to air.
  • They signal blood to coagulate and plug the gap, and they rally immune cells to fend off infiltrating microbes.
  • He established that hemophiliacs were unable to produce the factor that causes blood to coagulate.
  • Both are based on a simple principle: eggs coagulate when dropped into boiling stock or water.
  • Beat constantly until you feel the mixture is beginning to coagulate on the bottom.
  • Mostly its a home for the contrarians of the car world to coagulate and kvetch.
British Dictionary definitions for coagulate


verb (kəʊˈæɡjʊˌleɪt)
to cause (a fluid, such as blood) to change into a soft semisolid mass or (of such a fluid) to change into such a mass; clot; curdle
(chem) to separate or cause to separate into distinct constituent phases
noun (kəʊˈæɡjʊlɪt; -ˌleɪt)
the solid or semisolid substance produced by coagulation
Derived Forms
coagulable, adjective
coagulability, noun
coagulation, noun
coagulative (kəʊˈæɡjʊlətɪv) adjective
Word Origin
C16: from Latin coāgulāre to make (a liquid) curdle, from coāgulum rennet, from cōgere to drive together
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for coagulate

early 15c., from Latin coagulatus, past participle of coagulare "to cause to curdle," from cogere "to curdle, collect" (see cogent). Earlier coagule, c.1400, from Middle French coaguler. Related: Coagulated; coagulating.

Online Etymology Dictionary, © 2010 Douglas Harper
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coagulate in Medicine

coagulate co·ag·u·late (kō-āg'yə-lāt')
v. co·ag·u·lat·ed, co·ag·u·lat·ing, co·ag·u·lates
To change from the liquid state to a solid or gel; clot.

co·ag'u·la·bil'i·ty n.
co·ag'u·la'tor n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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