ind. (sandhi form: ca + eva)
Analysis. ca (and) + eva (only, just): a conjunction pairing 'and' with the emphasizing particle eva, forming a conditional meaning 'if and only if' or 'only if'. The form is a phonetic contraction, with initial e- of eva assimilating to the final -a of ca.
Etymology. ca is the ancient conjunction cognate with Sanskrit ca and Latin -que (both enclitic coordinators); eva is from Sanskrit eva (only, just), likely from *swa- 'own' (self), making eva etymologically 'of itself, purely'. Together they express conditional exclusivity rather than simple conjunction.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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