lithosphere
noun
- rigid, outermost shell of a terrestrial-type planet or natural satellite that is defined by its rigid mechanical properties
Wiktionary
noun
Etymology: From litho- + -sphere.
- The rigid, mechanically strong, outer layer of the Earth, which is divided into twelve major tectonic plates.
“Holonyms: Earth, earth”
“Meronym: crust”
- Any similar layer of an exoplanet.
“Holonym: planet”
“Meronym: crust”