Meaning: Prone to using large words that most people do not understand. Tediously lengthy.
Synonyms: Long winded, verbose, wordy, pleonastic, discursive, rambling, long drawn out, overlong, lengthy, protracted, interminable.
Use: I had to read the novel with a dictionary beside me because it was too prolix.
John’s reading skills are so poor there is no way he could read a prolix book on genetics.