A secondary or subordinate dialogue, or a dialogue that occurs in addition to the main conversation.
From Greek 'epi' (upon/beside) + 'dia' (through) + 'logue' (speech/discussion). This rare literary term emerged in Greek rhetoric to describe supplementary speeches.
Ancient Greek rhetoricians had names for every type of conversation imaginable—this word reminds us that they were the original masters of understanding how dialogue works!
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