locative plural of tāvatimsa (indeclinable noun designating the realm of the thirty-three gods)
Analysis. tāva-ti-msa: 'thirty' (tāva, 'so many') + ti (numeral particle) + msa (collective suffix, forming cardinal numbers); a nominal compound referring to the second lowest celestial realm in Buddhist cosmology, presided over by Indra (Sakka), where the Buddha's mother was reborn and where he taught the Dhamma.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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