The word "oxhydryl" is spelled with the letter combination "ox" followed by "hydryl". The first part of the word, "ox", is pronounced as /ɑks/, with the "o" pronounced as a short "a" and the "x" sounding like the "ks" in "taxi". The second part of the word, "hydryl", is pronounced as /haɪdrɪl/, with the "hy" sounding like "high" and the "dr" like "druh". Together, the word refers to a compound containing an oxygen atom and a hydroxyl group.
Hydroxyl.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.