Back in March, Louis Sorenson posted a helpful comment to B-Greek: The Biblical Greek Forum. In it he included a link to a great resource for finding the terminology that Ancient Greek writers used to describe their language. Here’s the relevant portion of his comment:
Randall Buth in his books Living Koine lists some of these terms in his appendix on pages 175-178. William Annis has collected a number of those terms primarily from Eleanor Dickey’s Ancient Greek scholarship: a Guide to Finding, Reading, and Understanding Scholia, Commentaries, Lexica and Grammatical Treatises, from Their Beginnings to the Byzantine Period, Oxford University Press, 2007. You can find his collection of terms athttp://scholiastae.org/docs/el/greek_grammar_in_greek.pdf
This terminology could be very useful in developing a new reference grammar for the Hellenistic Period. For earlier discussions of that topic, go here.