From Latin syndeticus, from Ancient Greek συνδετικός (sundetikós), from σύνδεσις (súndesis, “binding”) + -κός (-kós, “-ic: formingadjectives”), from συνδεῖν (sundeîn, “to join, to bind”), from σῠν- (sŭn-, “together”) + δεῖν (deîn, “to bind, to tie”).