‘Ens Rationis’ (pub. 25.11.14-17:15). 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-csps-lowell-lectures-1903-2nd-draught-3rd-lecture.
Quote:
An ens rationis is something whose being consists in the possibility of something being true about something else.
Source:
Peirce, C. S. (1903). C.S.P.'s Lowell Lectures of 1903 2nd Draught of 3rd Lecture. MS [R] 462.
URL:
http://www.commens.org/dictionary/entry/quote-csps-lowell-lectures-1903-2nd-draught-3rd-lecture