Definition of sea-floor spreading in English:

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sea-floor spreading

noun

[mass noun] Geology
The formation of fresh areas of oceanic crust which occurs through the upwelling of magma at mid-ocean ridges and its subsequent outward movement on either side.
Example sentences
  • After much thought, he proposed in 1960 that the movement of the continents was a result of sea-floor spreading.
  • The main figure demonstrates how sea-floor anomalies, also known as magnetic stripes, develop during sea-floor spreading.
  • The main figure demonstrates how sea-floor anomalies, also known as magnetic stripes, develop during sea-floor spreading.

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