The Commens Dictionary
Quote from ‘Harvard Lectures on the Logic of Science. Lecture VIII: Forms of Induction and Hypothesis’
By a symbol I mean [a representation] which upon being presented to the mind - without any resemblance to its object and without any reference to a previous convention - calls up a concept. I consider concepts, themselves, as a species of symbols.
A symbol is subject to three conditions. 1st it must represent an object or informed and representable thing. Second it must be a manifestation of logos, or represented and realizable form. Third it must be translatable into another language or system of symbols.