lithosphere
li-tho-sphere
noun
The rigid outer layer of the Earth, comprising the crust and upper mantle.
"Tectonic plates are large sections of the lithosphere."
Thesaurus
Synonyms: geosphere
li-tho-sphere
The rigid outer layer of the Earth, comprising the crust and upper mantle.
"Tectonic plates are large sections of the lithosphere."
Synonyms: geosphere