ionosphere

About 0.63 uses per million words.

Meaning

1. noun The part of the Earth's atmosphere beginning at an altitude of about 50 kilometers (31 miles) and extending outward 500 kilometers (310 miles) or more.
2. noun The similar region of the atmosphere of another planet.

Similar words

magnetosphere nightside dayside waveguide topside ionopause homosphere exosphere ignorosphere ozonosphere

Often followed by

and is at in of to are by as

Word family

ionospheres ionospheric ionospherically