Meaning of VACUUM in English

VACUUM

n. & v.

--n. (pl. vacuums or vacua)

1. a space entirely devoid of matter.

2 a space or vessel from which the air has been completely or partly removed by a pump etc.

3 a the absence of the normal or previous content of a place, environment, etc. b the absence of former circumstances, activities, etc.

4 (pl. vacuums) colloq. a vacuum cleaner.

5 a decrease of pressure below the normal atmospheric value.

--v. colloq.

1. tr. clean with a vacuum cleaner.

2 intr. use a vacuum cleaner.

Phrases and idioms:

vacuum brake a brake in which pressure is caused by the exhaustion of air. vacuum-clean clean with a vacuum cleaner. vacuum cleaner an apparatus for removing dust etc. by suction. vacuum flask Brit. a vessel with a double wall enclosing a vacuum so that the liquid in the inner receptacle retains its temperature. vacuum gauge a gauge for testing the pressure after the production of a vacuum. vacuum-packed sealed after the partial removal of air. vacuum pump a pump for producing a vacuum. vacuum tube a tube with a near-vacuum for the free passage of electric current.

Etymology: mod.L, neut. of L vacuus empty

Oxford English vocab.      Оксфордский английский словарь.