Definition of qualisign in US English:

qualisign

noun

Philosophy
  • In the philosophy of C. S. Peirce (1839–1914) and his followers: a quality which, when possessed by a particular object, functions as a word, sign, etc.

Origin

Early 20th century; earliest use found in Charles Peirce (1839–1914), scientist and philosopher. From quali- + sign.

Pronunciation

qualisign

/ˈkwɒlɪsʌɪn/