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Definition of extra- in English:

extra-

prefix

  • 1Outside; beyond.

    ‘extracellular’
    • ‘extraterritorial’
    1. 1.1Beyond the scope of.
      • ‘extracurricular’

Pronunciation

extra-

/ˈekstrə/ /ˈɛkstrə/

Origin

Via medieval Latin from Latin extra ‘outside’.