prolegomenous

[ proh-li-gom-uh-nuh s ]
/ ˌproʊ lɪˈgɒm ə nəs /

adjective

prefatory; preliminary; introductory.
characterized by unnecessary or lengthy prologuizing.

Origin of prolegomenous

First recorded in 1740–50; prolegomen(on) + -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019