The Commens Dictionary
Quote from ‘Foundations of Mathematics [R]’
If a sign allows no latitude, either to utterer or to interpreter, as t what object or meaning it shall be regarded as representing, it may be called a singular sign.
MS [R] 11:1
‘Singular’ (pub. 21.08.17-12:33). 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-foundations-mathematics-r-11.