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spreading center
[ spred-ing sen-ter ]
noun
, Geology.
- a linear zone in the seafloor along which magma rises and from which adjacent crustal plates are moving apart.
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Word History and Origins
Origin of spreading center1
First recorded in 1930–35
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Example Sentences
Vast streamers of flaming gas leaped and darted about its spreading center.
From Project Gutenberg
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