Definition of oceanization in US English:

oceanization

(also oceanisation)

noun

Geology
  • The conversion of continental crust into the much thinner and petrologically distinct oceanic crust.

Origin

1960s; earliest use found in Journal of Geophysical Research. From ocean + -ization.

Pronunciation

oceanization

/ˌəʊʃ(ə)nʌɪˈzeɪʃn/