† myopsyn.
Origin: A borrowing from Greek, combined with an English element; probably modelled on a French lexical item. Etymons: Greek μυῖα , -opsy comb. form.
Etymology: < ancient Greek μυῖα fly (see myiasis n.) + -opsy comb. form, probably after French myopsie (1855 in Littré-Robin). Compare slightly later myopsis n.In post-classical Latin, the disease is more commonly called myodesopsia (1807 in Edinb. Med. & Physical Dict. II) < μυῖα fly + -ώδης -ode comb. form1 + -οψία -opsia comb. form; compare classical Latin Myiōdēs a demigod invoked in Greece against flies (Pliny).
Medicine.
Obsolete.
rare. Apparently only attested in dictionaries or glossaries.
1860 J. E. Worcester Myopsy, a disease of the eyes in which dark spots are seen.
This entry has been updated (OED Third Edition, June 2003; most recently modified version published online June 2021).
n.1860