This root form (lemma) is used in 2 different forms in the NT: τεσσερακονταετὴς (NMS), τεσσερακονταετῆ (AMS).
It is glossed in 1 way: ‘forty_year’.
OET ACTS 7:23 Greek word=τεσσερακονταετὴς (tesserakontaetaʸs) Morphology=NMS English gloss=‘forty_year’ SR GNT ACTS 7:23 word 7
OET ACTS 13:18 Greek word=τεσσερακονταετῆ (tesserakontaetaʸ) Morphology=AMS English gloss=‘forty_year’ SR GNT ACTS 13:18 word 5