pron + particle (sandhi form tameva = taṃ + eva)
Analysis. taṃ (accusative of ta, 'that') + eva (emphasis particle 'just, only, even'). The sandhi fusion of final -ṃ with initial e- yields -me-. Doctrinal sense: 'that very thing' or 'precisely that', often used to highlight a single point of doctrine or a key principle being reiterated.
Etymology. ta is inherited from Indo-European *to- (demonstrative base of English 'that', Latin 'iste'); eva is an adverbial particle meaning 'just' or 'even', cognate with Sanskrit eva, likely from a root meaning 'turn' or 'swerve' (hence 'just this way, exactly so'). Together they form a common canonical phrase marking emphasis and identity: e.g. in the Four Noble Truths, taṃ dukkhasaccaṃ tameva ariyasaccaṃ, 'that very suffering is precisely the Noble Truth'.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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