Effusion



[ih-fyoo-zhuh n] /ɪˈfyu ʒən/

noun
1.
the act of effusing or pouring forth.
2.
something that is effused.
3.
an unrestrained expression, as of feelings:
poetic effusions.
4.
Pathology.

5.
Physics. the flow of a gas through a small orifice at such density that the mean distance between the molecules is large compared with the diameter of the orifice.
/ɪˈfjuːʒən/
noun
1.
an unrestrained outpouring in speech or words
2.
the act or process of being poured out
3.
something that is poured out
4.
the flow of a gas through a small aperture under pressure, esp when the density is such that the mean distance between molecules is large compared to the diameter of the aperture
5.
(med)

n.

c.1400, “a pouring out,” from Middle French effusion (14c.) and directly from Latin effusionem (nominative effusio) “a pouring forth,” noun of action from past participle stem of effundere “pour forth, spread abroad,” from ex- “out” (see ex-) + fundere “pour” (see found (v.2)). Figuratively, of speech, emotion, etc., from 1650s.

effusion ef·fu·sion (ĭ-fyōō’zhən)
n.

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