Definition

1. Noun:
   • The space in the atmosphere immediately above the earth: The physical, three-dimensional area comprising the atmosphere, especially the portion above a specific territory.
   • The portion of the atmosphere controlled by a country: The area of airspace above a nation's land and territorial waters over which it has jurisdiction and control.

Usage Examples

• Noun:
  • The new regulations restrict all drone flights in the protected air space.
  • The country claimed a violation of its sovereign air space by the foreign aircraft.

Advanced Usage

• "controlled airspace": Designated airspace where air traffic control service is provided.
  • All commercial flights must operate within controlled air space.
• "to violate airspace": To enter a country's controlled airspace without permission.
  • The military jet was intercepted after it violated the national air space.

Variants and Related Words

• Airspace (noun): A common closed compound form of "air space".
  • The pilot requested clearance to enter the airport's airspace.
• Air corridor (noun): A designated route through airspace.
• Flight level (noun): A specific altitude in airspace.

Synonyms

• Sky: (Informal) The upper atmosphere; often used more generally.
• Aerospace: The atmosphere and outer space considered together; a broader, more technical term.

Related Phrases

• "to close airspace": To prohibit all air traffic from a specific region.
  • The government decided to close its air space due to the volcanic ash cloud.
• "to defend one's airspace": To maintain military control over national airspace.
  • The air force is tasked with defending the nation's air space.

Related Idioms

• "A battle for airspace": Intense competition or conflict for control over a region of the sky, often used metaphorically in media or business.
  • The two telecom companies are in a battle for air space with their new satellite networks.

Noun

1. the space in the atmosphere immediately above the earth