Hypertext Webster Gateway: "lithosphere"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Lithosphere \Lith"o*sphere\, n. [Litho- + sphere.] (Phys. Geog.)
(a) The solid earth as distinguished from its fluid
envelopes, the hydrosphere and atmosphere.
(b) The outer part of the solid earth, the portion undergoing
change through the gradual transfer of material by
volcanic eruption, the circulation of underground water,
and the process of erosion and deposition. It is,
therefore, regarded as a third mobile envelope comparable
with the hydrosphere and atmosphere.
From WordNet (r) 1.7 (wn)
lithosphere
n : the solid part of the earth [syn: {geosphere}]
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