I have recently discovered you as an author & enjoy the books. I wonder if there is a glossary somewhere of things like quints, half glass & kay.

For better or worse, no such glossary exists. Most such terms are derived from our world, however. “Glass” as an interval of time actually comes from hourglass; so half-glass is the equivalent of half an hour. “Quint” comes from the Latin “quintus” (fifth). “Kay” is short for kilometer (even in our world). I used such take-offs in my fictional worlds as part of establishing their difference without using terms totally unfamiliar.