The act of ventilating, or the state of being ventilated; the art or process of replacing foul air by that which is pure, in any inclosed place, as a house, a church, a mine, etc.; free exposure to air.

Air movement into and out of the lungs.

Assistance in breathing by mechanically pumping air / oxygen into the lungs.

The introduction of outdoor air into a building by mechanical means.

A knitting operation that allows fabrics to breath. It is often utilized in pantyhose for cotton crotch panels or cotton soles. (See Aeration.

See General Exhaust, Local Exhaust, and Mechanical Exhaust.

mechanical breathing assistance.

Necessary in all buildings to disperse moisture resulting from bathing, cooking, breathing etc. and to assist in prevention of condensation. Floors: Necessary to avoid rot, especially Dry Rot; achieved by airbricks near to ground level. Roofs: Necessary to disperse condensation within roof spaces; achieved either by airbricks in gables or ducts at the eaves. (see Condensation)

The act of refrigerating, or cooling; refrigeration; as, ventilation of the blood.

Both the shell and liner are strategically vented to help keep a skater’s feet cool, dry, and comfortable. Many in-line shell designs use a patented ventilation system.

Airflow through a projector's internal components for the purpose of cooling the lamp, or light source. A projector's ventilation is usually found on the rear or side. It's important not to block the projector's ventilation because it may shorten the lamp life and damage the projector.

A technique for opening a burning building to remove heated smoke and gases to prevent explosive concentrations and to permit advancement of hose lines into effective positions for fire extinguishment.

Ventilated forced airflow to reduce vapour concentration levels

Important Procedure in firefighting in which the Hot smoke and gases are removed from inside a structure, either by natural convection or forced, and either through existing openings or new ones provided by firefighters at appropriate locations (e.g., on the roof). Proper ventilation can save lives and improper ventilation can cause backdraft or other hazards.