The Commens Dictionary
Quote from ‘Minute Logic: Chapter I. Intended Characters of this Treatise’
An Argument is a Sign which aims to determine a definite Interpretant, called its Conclusion. It must, a fortiori, have a definite subject.
MS [R] 425:119
From an early/discarded draft
‘Argument’ (pub. 09.03.18-12:25). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from http://www.commens.org/dictionary/entry/quote-minute-logic-chapter-i-intended-characters-treatise-40.