How to Pronounce "ionosphere"
word
ˌaɪˈɑnɔsˌfiɹ
eye-AH-naw-sfeer
ˈaɪənˌɒsfiə
EYE-uhn-OSS-fee-uh
Definition
The ionosphere is a part of Earth's upper atmosphere, from about 60 km to 1,000 km above the ground, where many atoms are ionized by solar radiation. It plays an important role in reflecting radio signals and in atmospheric electricity.
IPA Transcription
American English
ˌaɪˈɑnɔsˌfiɹ
British English
ˈaɪənˌɒsfiə
Simplified Pronunciation
US
eye-AH-naw-sfeer
UK
EYE-uhn-OSS-fee-uh
Listen in Context
The ionosphere helps radio waves travel long distances.
Scientists study the ionosphere to understand space weather.
The auroras are caused by particles in the ionosphere.
After sunset, the ionosphere changes and affects radio signals.