accusative singular neuter of ekaggacitta (ekaggaṁ is nominative/accusative singular neuter of ekaggacitta used as adjective/noun, or adverbial accusative)
Analysis. eka + agga + citta: 'one' + 'point/edge/tip' + 'mind'. The compound denotes a mind gathered to a single focus, foundational to meditative concentration (samādhi). The surface form ekaggaṁ is the neuter accusative, often used adverbially ('with one-pointed mind') or attributively to describe states of consciousness in the canon.
Etymology. eka from Indo-European *oiko- (one, unique; cognate with English 'one'), agga from √aggati 'to reach/peak' (the tip or apex), citta from √cit 'to observe/perceive'. The spatial image of 'one point' or 'one peak' transfers to mental focus and unity of attention.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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