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spreading center

American  
[spred-ing sen-ter] / ˈsprɛd ɪŋ ˈsɛn tər /

noun

Geology.
  1. a linear zone in the seafloor along which magma rises and from which adjacent crustal plates are moving apart.


Etymology

Origin of spreading center

First recorded in 1930–35

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Carn said a dramatic escalation appears unlikely because the eruption is associated with a volcanic ridge near the intersection of a transform fault and a back arc spreading center.

From Science Daily Jul. 10, 2026

Every plate-boundary spreading center is a potential colonization area.

From Science Daily Mar. 15, 2024

The volcanic spreading center — more than 300 miles long — lies in a slanted line off the West Coast, from British Columbia to Oregon.

From New York Times Jan. 12, 2016

The study in Science was based on fresh ocean-floor data gathered by a Korean icebreaker ship during 2011 and 2013 surveys across the Australian-Antarctic ridge, a spreading center south of Tasmania.

From Science Magazine Feb. 5, 2015

Vast streamers of flaming gas leaped and darted about its spreading center.

From Palos of the Dog Star Pack by Giesy, J. U.

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