Adjective
Alt. of Semiotic
Source: Webster's dictionaryIt has never been in my power to study anything, mathematics, ethics, metaphysics, gravitation, thermodynamics, optics, chemistry, comparative anatomy, astronomy, psychology, phonetics, economics, the history of science, whist, men and women, wine, metrology, except as a study of semeiotic . Charles Sanders Peirce
He called it both semiotic and semeiotic. Source: Internet
Indeed the English physician and scholar Henry Stubbes had transliterated this term of specialized science into English precisely as "semeiotic" in his 1670 work, The Plus Ultra Reduced to a Non Plus (p. 75). Source: Internet