glossary V

Ventilator is the proper term for a breathing machine used to treat respiratory failure and help support breathing.

Vacuum is a relative condition, normally referring to a lower pressure than atmospheric in any given confined volume.

Vitreous china refers to a clay material with a vitreous surface used to manufacture some plumbing fixtures such as toilets and lavys.

Veal calf refers to a young bovine of either sex that has not reached puberty (up to about nine months of age), and has a maximum live weight of 750 pounds.

The term vitamins refers to organic compounds (and some other related compoiunds) that are essential in limited quantities to the normal growth and activity of many living organisms, but may not be normally synthesized by the body in sufficient amounts.

Vulcanite is characterized as a dark-colored variety of India rubber that has been subjected to vulcanization. It also called hard rubber. A common material used for the stem on both mass-produced and hand-made pipes.

The term vehicle may refer to the following:

• a machine , usually self-powered and self-propelled, that may be used to transport people or goods from one place to another via land, air or sea
• an inactive or inert substance or medium that may be combined with a medicine, pigment or other active material in order to give it bulk or facilitate in its administration
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Varnish is identified as the solution of resinous matter in an oil or a volatile liquid. When applied to a surface, it dries transparent, hard and glossy, protecting the surface from air and moisture.