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Jyutping fei1 soeng2 fei1 fei1 soeng2 cyu3
Pinyin fēi xiǎng fēi fēi xiǎng chù

Definitions (Wiktionary)
  1. noun
    (Buddhism) the “sphere of neither perception nor nonperception”, the fourth and highest of the four levels of the immaterial realm
    (syn.) 非有想非无想处, 非有想非无想天, 非想非非想天, 非有想非無想天, 非有想非無想處