Definition of extra- in English:

extra-

Pronunciation: /ˈɛkstrə/

prefix

1Outside; beyond: extracellular extraterritorial
1.1Beyond the scope of: extracurricular

Origin

via medieval Latin from Latin extra 'outside'.

Definition of extra- in:

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Word of the day anomalous
Pronunciation: əˈnɒm(ə)ləs
adjective
deviating from what is standard, normal, or expected