LSJ
ον, aiways fed; perpetual guest, Epich. 34; at Athens, of those maintained at public cost in the Prytaneum (in form ἀϊσ-), IG2². 678.42, 3.1019, al.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
[ῑ], im Prytaneum stets gespeist, Poll. 6.34 u. Inscr. 189 in der Form ἀΐσιτοι.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)