exfiltrationn.
/ˌɛksfɪlˈtreɪʃən/ rare.
The action or process of filtering out.
ΘΚΠ
the world > movement > motion in a certain direction > going or coming out > [noun] > filtering out
exfiltration1878
1878 P. H. Lawrence tr. B. von Cotta Rocks Classified (new ed.) 25 Zeolites ‘are products of exfiltration or of the internal decomposition and transmutation of the mother rock.’
Draft additions 1993
2. The action of exfiltrating; withdrawal from a dangerous position. Also transferred. Military (originally U.S.).
ΘΚΠ
the world > movement > motion in a certain direction > going away > [noun] > going away quietly > from dangerous position
exfiltration1968
society > armed hostility > military operations > manoeuvre > [noun] > retreat > withdrawal
pull-out1825
withdrawal1838
inactivation1943
bug-out1950
exfiltration1968
1968 Dict. U.S. Mil. Terms (U.S. Dept. Defense) 84/1 Exfiltration,..the removal of personnel or units from areas under enemy control.
1984 Defense & Foreign Affairs Sept. 27/1 The Combat Talon and the HH-53 Pave Low are used in long-range infiltration, exfiltration, and rescue operations.
1987 Christian Sci. Monitor 11 Mar. 11/3 He has begun to discern a new ‘exfiltration’ of young blacks to neighbouring states, similar to the flight after 1976.
This entry has not yet been fully updated (first published 1894; most recently modified version published online June 2021).
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n.1878