the twenty-third letter of the Greek alphabet (Ψ, ψ), transliterated as ‘ps’ 希腊字母表中第二十三个字母(译写为ps) ■(Psi)[followed by Latin genitive](Astronomy)the twenty-third star in a constellation (天文)ψ星(星座中第二十三颗星) Psi Aquarii. 宝瓶座ψ星。
[mass noun]supposed parapsychological or psychic faculties or phenomena 超心理能力(或现象)