sandhi form (sā + assa)
Analysis. sā (feminine nominative singular demonstrative pronoun 'that') + assa (genitive singular masculine of aya 'he', dative-genitive form meaning 'for him' or 'of him'). The contraction exemplifies external sandhi where final -ā and initial a- coalesce into -ā-.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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