emanation

[em-uh-ney-shuh n] /ˌɛm əˈneɪ ʃən/
noun
1.
an act or instance of emanating.
2.
something that emanates or is emanated.
3.
Physical Chemistry. a gaseous product of radioactive disintegration, including radon, thoron, and actinon. Symbol: Em.
Origin
1560-70; < Late Latin ēmānātiōn- (stem of ēmānātiō), equivalent to ēmānāt(us) (see emanate) + -iōn- -ion
Related forms
emanational, adjective
Examples from the web for emanation
  • My subsequent sonic emanation of joyous surprise nearly sent us into the guardrail.
  • The astonishing stranger is green from head to foot, a kind of emanation from nature.
  • Second, emanation of radon from uranium increases in the foliation.
  • Their work is about the transfer of energy, the emanation of the soul, and the common denominators of the human experience.
  • emanation of radon depends entirely on the chemistry of the rock.
  • The lower jaw, which is mostly covered by the mount, is decorated with an emanation of scrolls.
  • We are also measuring radon emanation from core samples to determine if changes occurred as a result of the remediation process.
British Dictionary definitions for emanation

emanation

/ˌɛməˈneɪʃən/
noun
1.
an act or instance of emanating
2.
something that emanates or is produced; effusion
3.
a gaseous product of radioactive decay, such as radon
Derived Forms
emanational, adjective
Word Origin and History for emanation
n.

1560s, from Late Latin emanationem (nominative emanatio), noun of action from past participle stem of Latin emanare "flow out, arise, proceed," from ex- "out" (see ex-) + manare "to flow," from PIE root *ma- "damp."

emanation in Medicine

emanation em·a·na·tion (ěm'ə-nā'shən)
n.

  1. Something that issues from a source; an emission.

  2. Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.