Definition of polylogy in US English:

polylogy

noun

rare
  • Loquacity, talkativeness; verbosity; an instance of this.

Origin

Early 17th century. From post-classical Latin polylogia verbosity or its etymon ancient Greek πολυλογία loquacity from πολυλόγος loquacious (from πολυ- + -λογος) + -ία; compare -logy.