[ koh-uh-les ]
/ ˌkoʊ əˈlɛs /

verb (used without object), co·a·lesced, co·a·lesc·ing.

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), co·a·lesced, co·a·lesc·ing.

to cause to unite in one body or mass.

Nearby words

  1. coal-tar creosote,
  2. coal-tar pitch,
  3. coala,
  4. coalbin,
  5. coaler,
  6. coalescence,
  7. coalface,
  8. coalfield,
  9. coalfish,
  10. coalification

Origin of coalesce

1535–45; < Latin coalēscere, equivalent to co- co- + al- (stem of alere to nourish, make grow) + -ēscere -esce

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for coalesce

British Dictionary definitions for coalesce


/ (ˌkəʊəˈlɛs) /


(intr) to unite or come together in one body or mass; merge; fuse; blend
Derived Formscoalescence, nouncoalescent, adjective

Word Origin for coalesce

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 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for coalesce



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