The Commens Dictionary
Quote from ‘Prolegomena to an Apology for Pragmaticism’
A familiar logical triplet is Term, Proposition, Argument. In order to make this a division of all signs, the first two members have to be much widened. [—] As the third member of the triplet, I sometimes use the word Delome […], though Argument would answer well enough. It is a Sign which has the Form of tending to act upon the Interpreter through his own self-control, representing a process of change in thoughts or signs, as if to induce this change in the Interpreter.
‘Argument’ (pub. 25.04.13-18:32). 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-prolegomena-apology-pragmaticism-9.