-opiacomb. form
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Primary stress is attracted to the first syllable of this combining form and vowels may be reduced accordingly; see e.g.
scotopia n..
Origin: A borrowing from Greek. Etymon: Greek -ωπία.
Etymology: < ancient Greek -ωπία (in e.g. ἀμβλυωπία amblyopia n.) < ὠπ- , ὤψ eye, face (see -ops comb. form) + -ία -ia suffix1. Compare post-classical Latin -opia , and -opy comb. form.Combining chiefly with first elements of Greek origin, but see quadrantanopia n., with a first element of Latin origin. First attested in terms borrowed from post-classical Latin or Greek, as nyctalopia n., amblyopia n., myopia n.; formations are found from the 19th cent.
This entry has been updated (OED Third Edition, June 2004; most recently modified version published online September 2019).