Abbott-Smith Manual Greek Lexicon
ἕν-δεκα (G1733)
6 ἕν-δεκα , οἱ, αἱ, τά indecl., eleven : of the eleven apostles, οἱ, ἕ. , Mt 28:16 , Mk 16:14 , Lk 24:9 , 33 , Ac 1:26 2:14 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain