We don't have synonyms for onera yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are opera, monera and oner.
(N) :
The Office National d'Études et de Recherches Aérospatiales (English: National office for aerospace studies and research) or ONERA, dubbed The French Aerospace Lab in English, is the French national aerospace research center.
(N) :
The Office National d'Études et de Recherches Aérospatiales (English: National office for aerospace studies and research) or ONERA, dubbed The French Aerospace Lab in English, is the French national aerospace research center.