trialogue

[trahy-uh-lawg, -log]
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noun

a discussion or conversation in which three persons or groups participate.

Origin of trialogue

1525–35; tri- + (di)alogue, mistaken as a formation with di-1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trialogue

Historical Examples of trialogue