This root form (lemma) is used in 4 different forms in the NT: ἑβδομήκοντα (amp), ἑβδομήκοντα (nfp), ἑβδομήκοντα (nmp), ἑβδομήκοντᾳ (dfp).
It is glossed in 1 way: ‘seventy’.
OET LUKE 10:1 Greek word=ἑβδομήκοντα (hebdomaʸkonta) Morphology=amp English gloss=‘seventy’ SR GNT LUKE 10:1 word 11
OET LUKE 10:17 Greek word=ἑβδομήκοντα (hebdomaʸkonta) Morphology=nmp English gloss=‘seventy’ SR GNT LUKE 10:17 word 4
OET ACTS 7:14 Greek word=ἑβδομήκοντᾳ (hebdomaʸkonta) Morphology=dfp English gloss=‘seventy’ SR GNT ACTS 7:14 word 17
OET ACTS 23:23 Greek word=ἑβδομήκοντα (hebdomaʸkonta) Morphology=amp English gloss=‘seventy’ SR GNT ACTS 23:23 word 18
OET ACTS 27:37 Greek word=ἑβδομήκοντα (hebdomaʸkonta) Morphology=nfp English gloss=‘seventy’ SR GNT ACTS 27:37 word 15