greˈgarianismn. the practice of collecting in flocks or companies.
ΘΚΠ
the world > space > relative position > arrangement or fact of being arranged > state of being gathered together > [noun] > assembling of people or animals > condition of or tendency to
congregation1835
gregariousness1840
congregativeness1841
gregarianism1881
1881 Truth 13 Oct. 460/1 The tendency to gregarianism is nowhere more manifest than along the Riviera.