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[koh-uh-les] /ˌkoʊ əˈlɛs/
verb (used without object), coalesced, coalescing.
to grow together or into one body:
The two lakes coalesced into one.
to unite so as to form one mass, community, etc.:
The various groups coalesced into a crowd.
to blend or come together:
Their ideas coalesced into one theory.
verb (used with object), coalesced, coalescing.
to cause to unite in one body or mass.
1535-45; < Latin coalēscere, equivalent to co- co- + al- (stem of alere to nourish, make grow) + -ēscere -esce
Related forms
coalescence, noun
coalescent, adjective
noncoalescence, noun
noncoalescent, adjective
noncoalescing, adjective
uncoalescent, adjective
1, 2. unite, combine, join. 2. amalgamate, fuse, blend, merge. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for coalescence
  • It is probably formed by the coalescence of two ganglia corresponding to the fifth and sixth cervical nerves.
  • We particularly focused on coalescence, which is a process by which two drops merge to form a larger drop.
British Dictionary definitions for coalescence


(intransitive) to unite or come together in one body or mass; merge; fuse; blend
Derived Forms
coalescence, noun
coalescent, adjective
Word Origin
C16: from Latin coalēscere from co- + alēscere to increase, from alere to nourish
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for coalescence



1540s, from Latin coalescere "to unite, grow together, become one in growth," from com- "together" (see co-) + alescere "to grow up" (see adolescent). Related: Coalesced; coalescing; coalescence; coalescent.

Online Etymology Dictionary, © 2010 Douglas Harper
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coalescence in Medicine

coalescence co·a·les·cence (kō'ə-lěs'əns)
See concrescence.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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