Lokuttara

Lokuttara: 'supra-mundane', is a term for the 4 paths and 4 fruitions of sotāpatti etc. see: ariya-puggala with Nibbana as ninth. Hence one speaks of '9 supra-mundane things.'

References

Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.