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Definitions from WordNet

Definitions from the Web

f region

Part of Speech: Noun

Sense 1: A region of the Earth's ionosphere, located above the E region and below the F2 region, characterized by highest ionization and strongest radio wave propagation.

Example sentence: The f region is important for long-distance radio communication as it enables signals to bounce off the ionosphere.

Related products on Amazon: F Region Ionosphere Books

Part of Speech: Noun

Sense 2: A geographical region or area starting with the letter "F" that is popular or well-known to the locals.

Example sentence: The coastal town of Florence is a beautiful f region known for its stunning beaches and charming cafes.

Related products on Amazon: F Region Travel Guides