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anacoenosis

[an-uh-si-noh-sis]
noun, plural an·a·coe·no·ses [an-uh-si-noh-seez] /ˌæn ə sɪˈnoʊ siz/. Rhetoric.
  1. a figure of speech in which an appeal is made to one's listeners or opponents for their opinion or judgment as to the subject under discussion.

Origin of anacoenosis

1580–90; < Medieval Latin < Greek anakoínōsis, equivalent to anakoinō-, variant stem of anakoinoûn to impart (ana- ana- + koinoûn to make common, derivative of koinós ceno-2) + -sis -sis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018