lithospher

lithospher

CEFR: C1-C2 /lithos-pher/ [no ipa available]

Definition: he rigid outer part of the earth, consisting of the crust and upper mantle.

Example Sentences:
After new oceanic crust forms, the lithosphere cools and thickens as it moves away from the ocean ridge. An alternative to an active mantle thermal anomaly is greater stretching of the mantle lithosphere than the crust