hallucinationEnglish → SpanishOxford English–Spanishhallucination /AmE həˌlusəˈneɪʃ(ə)n , BrE həˌluːsɪˈneɪʃ(ə)n / noun (Medicine, Psychology) 1 [countable]: (vision) alucinación f to have hallucinations tener alucinaciones2 [uncountable]: (state) alucinaciones fpl