Definition of sea change in English:

sea change

noun

  • A profound or notable transformation.

    • ‘This marks a profound sea change for the Company, which is arguably the largest B-to-B publisher online.’
    • ‘Only a true partnership involving all stakeholders can make a real sea change.’
    • ‘With every decision that marks a sea change on the telecom horizon, there's usually a technology solution to address it.’
    transformation, change, alteration, modification, variation, conversion, revision, amendment, metamorphosis, transfiguration, evolution, mutation
    remodelling, reshaping, remoulding, redoing, reconstruction, rebuilding, recasting, reorganization, rearrangement, reordering, reshuffling, restyling, rejigging, reworking, renewal, renewing, revamping, renovation, overhaul, remaking
    revolutionizing, revolution, transmutation
    transmogrification
    View synonyms

Origin

From Shakespeare's Tempest (I. ii. 403).

Pronunciation

sea change

/ˈsē ˌCHānj/