Definitions

1. noun

The region of the upper atmosphere of a planet, especially the Earth, in which the atmosphere interacts with the solar wind, characterized by ionization of the atmosphere at altitudes of about 50-600 km, and the presence of ions and free electrons.

“The ionosphere plays a crucial role in radio communication, as it affects the propagation of radio waves.”

2. noun

The ionized layer of the atmosphere around a planet, especially the Earth.

“The ionosphere is a key component of the Earth’s atmospheric system, influencing the planet’s weather patterns and climate.”