What is "significs"

n. (context obsolete English) A proposed linguistic science based on the use of the exact significance of terms and concepts

Significs is a linguistic and philosophical term introduced by Victoria, Lady Welby in the 1890s. It was later adopted by the Dutch Significs Group (or movement) of thinkers around Frederik van Eeden, which included L. E. J. Brouwer, founder of intuitionistic logic, and further developed by Gerrit Mannoury and others.