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asthenosphere
noun
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How to pronounce asthenosphere:

Definition of asthenosphere:

asthenosphere (noun):
noun. the lower layer of the crust.
a zone of a celestial body (such as the earth) which lies beneath the lithosphere and within which the material is believed to yield readily to persistent stresses

Synonyms for asthenosphere:

layercrust

Other 4-syllable words like asthenosphere

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