signifer /ˈsɪɡnɪfə(ɹ)/adjective 1noun 1forms 1 adjective1 •(no longer used) Bearing signs.the circle called Signifer, or the Zodiake — 1601 noun1 •Something that indicates or signifies; a sign, symbol, or codeword.In other words: the advertiser creates a new sign of which the signifier consists of the happy face and the signified can be defined as "using this product makes (you) happy".. — 1981 formssignifers