- the space in the atmosphere immediately above the earth
- the atmosphere above a nation that is deemed to be under its jurisdiction; "the plane was refused permission to enter Chinese airspace"
- Airspace means the portion of the atmosphere controlled by a country above its territory, including its territorial waters or, more generally, any specific three-dimensional portion of the atmosphere.
- (Air-spaced) This refers to the type of achromatic lens where the two components are just pressed together, not glued ('cemented') together. The air space between the two components of the lens can be so thin that the two components are touching.
- is equal to ½" to ¾" between the panes of glass in a window.
- A continuous volume of defined dimensions.
- Densities that appear fluffy (like clouds) that are indicative of consolidation.
- The cavity formed by the spacer bar between the two panes of glass in double-glazed units, is generally filled with air. The air can be replaced with argon for example, for enhanced thermal insulation or with sulphur hexafluoride for improved acoustic performance.
- This is a component placed at the perimeter of an insulting glass unit to separate lites – or single panes – of glass.
- The projected bank cubic yards (BCY) of the landfill to be filled with waste as determined by survey and/or other engineering techniques.
- Historically, one owned the airspace above a parcel of land "to the heavens". Today, airspace refers to the legal concept that a person who owns land also owns as much of the airspace above the land as he or she can effectively use.