-opycomb. form
Primary stress is retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly; see e.g.
myopy n.Origin: A borrowing from Greek. Etymon: Greek -ωπία.
Etymology: < ancient Greek -ωπία (see -opia comb. form, and compare -y suffix3). Compare French -opie.Combining with first elements of Greek origin. Attested in a few formations from the 17th to the 19th centuries. Chiefly in the anglicized form of words in -opia (in the case of the earliest example, nyctalopy (17th cent.), of the post-classical Latin etymon).
This is a new entry (OED Third Edition, June 2004; most recently modified version published online September 2019).