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Pronunciation varies by accent · noun
Loss or removal of vacuum (“reduction of pressure below that of the atmosphere”)..
1963, B. W. Spear, D. E. Powell, Kimcode, a method for controlling devacuations of television tubes, IEEE Trans Broadcast Telev. Receivers, 1963, 9, 25
1981, L. Brandsma, H. D. Verkruijsse, Synthesis of Acetylenes, Allenes, and Cumulenes: A Laboratory Manual, Elsevier Science Limited After removal of the solvents and after distillation in an oil-pump vacuum nitrogen must be used for the devacuation.
[…] 1960 shows an increase in resistance from 22 to 30 ohms which was related to a loss in vacuum. It can be seen that in this case, over the period of the latter 4 years, the total frequency change due to both devacuation and ageing ...
First acquire a defunct oscilloscope C.R.T. of the flat face variety and devacuate it. The method I used to devacuate is as follows : First wrap the C.R.T. in a blanket, with only the extreme socket end exposed. Next, with the base pointed away from yourself, gently file a minute hole in the evacuation nipple of the C.R.T. If this is done carefully, devacuation will occur...
[…] prevents slow propagation of surface flaws, encountered in service, which would otherwise lead to devacuation of the CRT. […] must not exceed the threshold value to prevent flaw growth and preserve vacuum over the life of CRT.
Use devacuation when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Devacuation means Loss or removal of vacuum (“reduction of pressure below that of the atmosphere”)..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
1963, B. W. Spear, D. E. Powell, Kimcode, a method for controlling devacuations of television tubes, IEEE Trans Broadcast Telev. Receivers, 1963, 9, 25
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