[ verb ih-fyooz; adjective ih-fyoos ]
/ verb ɪˈfyuz; adjective ɪˈfyus /

verb (used with object), ef·fused, ef·fus·ing.

to pour out or forth; shed; disseminate: The town effuses warmth and hospitality.

verb (used without object), ef·fused, ef·fus·ing.

to exude; flow out.
Physics. (of a gas) to flow through a very small orifice.


scattered; profuse.
Botany. spread out loosely.
(of certain shells) having the lips separated by a gap or groove.

Nearby words

  1. effortless,
  2. effraction,
  3. effrontery,
  4. effulgence,
  5. effulgent,
  6. effusiometer,
  7. effusion,
  8. effusive,
  9. effy,
  10. efik

Origin of effuse

1350–1400; Middle English < Latin effūs(us) (past participle of effundere) poured out, equivalent to ef- ef- + fūsus poured (see fuse2)

Related formsun·ef·fused, adjectiveun·ef·fus·ing, adjective

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

Examples from the Web for effuse

British Dictionary definitions for effuse


verb (ɪˈfjuːz)

to pour or flow out
to spread out; diffuse
(intr) to talk profusely, esp in an excited manner
to cause (a gas) to flow or (of a gas) to flow under pressure

adjective (ɪˈfjuːs)

botany (esp of an inflorescence) spreading out loosely

Word Origin for effuse

C16: from Latin effūsus poured out, from effundere to shed, from fundere to pour

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 effuse



late 14c., from Middle French effuser or directly from Latin effusus, past participle of effundere "to pour forth" (see effusion). Related: Effused; effusing.

Online Etymology Dictionary, © 2010 Douglas Harper