vacuum-suction
21vacuum cleaner — ► NOUN ▪ an electrical apparatus that collects dust from floors and other surfaces by means of suction …
22vacuum fan — vacuum fan, a fan that operates by suction, used to ventilate an enclosed area …
23suction aspiration — vacuum curettage …
24suction curettage — vacuum c …
25Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …
26Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… …
27Vacuum pump — A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke. Types Pumps can be broadly categorized according to three… …
28suction cup — noun a cup shaped device (made of rubber, glass, or plastic) that produces a partial vacuum; used to adhere or draw something to a surface • Hypernyms: ↑device * * * noun : a cup of glass or of a flexible material (as rubber) in which a partial… …
29Vacuum brake — The vacuum brake is a braking system used on trains. It was first introduced in the mid 1860s and a variant, the automatic vacuum brake system became almost universal in British train equipment, and in those countries influenced by British… …
30vacuum — 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… …
