sandhi contraction (pana + ettha)
Analysis. pana 'and, moreover' + ettha 'here, in this matter': a conjunctive particle marking transition or addition of a related point in the same location or context.
Etymology. pana is a versatile conjunction (cognate with Latin pone 'behind, after'); ettha derives from itta (√i 'go'), meaning 'here' or 'in this respect'. The compound signals discourse progression: 'and here' or 'moreover in this regard'.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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