sandhi contraction (taṃ + ca + assa)
Analysis. taṃ (accusative singular of ta-, 'that') + ca (conjunction, 'and') + assa (genitive singular of aha-, 'self, he'; possessive 'his'). The sandhi contraction shows loss of the final ṃ of taṃ before c and coalescence into ñc.
Etymology. taṃ descends from Indo-European *to-, the stem of demonstratives (English 'that', Latin 'is'). assa is the genitive of aha-, related to Sanskrit ātman 'self' and English 'ego' through the root *swe- (one's own). ca is the conjunction, unrelated to the demonstrative or possessive.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
Lite mode — plain HTML for e-readers and old browsers. Full version