treatise

Meanings

1. 1
   noun

   A formal, usually lengthy, systematic discourse on some subject.

   "As you cannot make a speech, you must," said Henrietta, "put it into a treatise.".

2. 2
   noun

   a formal exposition

From Middle English tretys, from Anglo-Norman tretiz and Old French traitis (“treatise, account”), from traitier (“to deal with, treat”).

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