- [countable, uncountable]
the fact of seeming to see or hear somebody/something that is not really there, especially because of illness or drugs 幻觉，幻视，幻听（尤指生病或吸毒所致） to have hallucinations 产生幻觉 High temperatures can cause hallucination. 高烧可使人产生幻觉。 She was admitted to hospital suffering from hallucinations. 她因出现幻觉症状而入院治疗。
Oxford Collocations Dictionaryadjective- mild
- vivid
- auditory
- …
- experience
- have
- suffer
- …
- [countable]
something that is seen or heard when it is not really there 幻视（或幻听）到的东西；幻觉；幻象 Oxford Collocations Dictionaryadjective- mild
- vivid
- auditory
- …
- experience
- have
- suffer
- …
Some speakers do not pronounce the ‘h’ at the beginning of hallucination and use ‘an’ instead of ‘a’ before it. This now sounds old-fashioned.
Word Originearly 17th cent.: from Latin hallucinatio(n-), from the verb hallucinari, from Greek alussein ‘be uneasy or distraught’.