A Dicent Sign is a sign, which, for its Interpretant, is a Sign of actual existence. It cannot, therefore, be an icon, which affords no ground for an interpretation of it as referring to actual existence. A Dicisign necessarily involves, as a part of it, a rheme, to describe the fact which it is interpreted as indicating. But this is a peculiar kind of rheme; and while it is essential to the dicisign, it by no means constitutes it.
[—] Or we may say […] that a Dicisign is a sign which is understood to represent its object in respect to actual existence…
http://www.commens.org/dictionary/entry/quote-syllabus-nomenclature-and-division-triadic-relations-far-they-are-determine-4