Definition of seafloor spreading in English:

seafloor spreading

Syllabification: seafloor spread·ing

noun

Geology
  • The formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side.
    More 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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