thermosphère

== French == === Etymology === From thermo- +‎ -sphère. === Pronunciation === IPA(key): /tɛʁ.mɔs.fɛʁ/ === Noun === thermosphère f (plural thermosphères) thermosphere (layer of the Earth's atmosphere) === Further reading === “thermosphère”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012