syndetic
adjective
syn·det·ic sin-ˈde-tik 
: connective, connecting
syndetic pronoun
also : marked by a conjunctive
syndetic relative clause
syndetically
sin-ˈde-ti-k(ə-)lē
adverb 
Word History
Etymology
Greek syndetikos, from syndein to bind together — more at asyndeton
First Known Use
1876, in the meaning defined above