Definition of cool Britannia in US English:

cool Britannia

(also Cool Britannia)

noun

  • Britain, perceived as a stylish and fashionable place, especially (in the late 1990s) as represented by the international success of and interest in contemporary British art, popular music, film, and fashion. Also: a (supposed) cultural movement associated with this perception. Compare Brit-.

Origin

1960s. From cool + Britannia, punningly after Rule Britannia.

Pronunciation

cool Britannia

/ˌkuːl brɪˈtanjə/