Sense

1. consisting of fifty children
2. having fifty children

Examples

• πέμπτη δ’ ἀπ’ αὐτοῦ γέννα πεντηκοντάπαισ πάλιν πρὸσ Ἄργοσ οὐχ ἑκοῦσ’ ἐλεύσεται θηλύσποροσ, φεύγουσα συγγενῆ γάμον ἀνεψιῶν· (Aeschylus, Prometheus Bound, episode, lyric 12:4)
• Δαναόσ, ἀδελφὸσ δ’ ἐστὶ πεντηκοντάπαισ. (Aeschylus, Suppliant Women, episode 7:26)

Similar forms

• πεντηκοντάπαις (2)

Source: Henry George Liddell. Robert Scott. "A Greek-English Lexicon". revised and augmented throughout by. Sir Henry Stuart Jones.