different between effusion vs efflux

English

Etymology

Borrowed from Middle French effusion, from Latin eff?si? (“outpouring”). Displaced native Old English ?gotennes.

Pronunciation

• Rhymes: -u???n

Noun

effusion (countable and uncountable, plural effusions)

1. A liquid outpouring.
2. (chemistry) Process of gases passing through a hole or holes considerably smaller than the mean free path of the gas molecules.
3. (figuratively, by extension) An outpouring of speech or emotion.
   • 1930; George S. Kaufman, Morrie Ryskind, Bert Kalmar, Harry Ruby; Animal Crackers, Paramount Pictures

     Captain Spaulding: My friends, I am highly gratified by this magnificent display of effusion […]

4. (medicine) The seeping of fluid into a body cavity; the fluid itself.

Translations

French

Etymology

From Middle French effusion, borrowed from Latin effusio, effusionem.

Noun

effusion f (plural effusions)

1. effusion

Further reading

• “effusion” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

English

Etymology

From Latin effluxus, from efflu? (“flow out or away”), from ex (“out of, from”) + flu? (“flow”). See also effluxion

Pronunciation

• IPA^(key): /??fl?ks/

Noun

efflux (countable and uncountable, plural effluxes)

1. The process of flowing out.

   We all age through the efflux of time.

   The efflux of matter from a boil can be painful.

   • 1988, Elizabeth Sagey, Degree of closure in complex segments, Norval Smith, Harry van der Hulst (editors), Features, Segmental Structure and Harmony Processes, Part 1, Linguistic Models 12a, page 176,

     The remaining effluxes are pronounced without audible velar release.

   • 2003, Awtar Krishan, Flow cytometric monitoring of drug resistance in human tumor cells, R.C. Sobti, A. Krishan (editors), Advanced Flow Cytometry: Applications in Biological Research, page 55,

     By facilitating efflux of drugs from the intracellular domain, these proteins reduce cytotoxicity and thus confer drug resistance.

2. That which has flowed out.

   the efflux of a boil

   • Prime cheerer, light! […] Efflux divine.

Synonyms

• (process of flowing out): outflow, effluxion, effluence
• (that which has flowed out): outflow

Antonyms

• influx

Translations

Verb

efflux (third-person singular simple present effluxes, present participle effluxing, simple past and past participle effluxed)

1. (intransitive) To run out; to flow forth.
2. (intransitive, obsolete) To pass away.