Definition of megadeath in English:

megadeath

noun

  • A unit used in quantifying the casualties of nuclear war, equal to the deaths of one million people.

    ‘even in an era conditioned to megadeaths, the thought of hundreds of thousands of babies dying could not go unchallenged’
    • ‘We're talking megadeaths, if not outright extinction!’
    • ‘Dr. Caldicott retreated to the outback, but she left a legacy of tremendous mass awareness about the threat of nuke megadeath and planetcide.’

Pronunciation

megadeath

/ˈmɛɡədɛθ/