This root form (lemma) is used in 1 different forms in the NT: Πεντηκοστῆς (GFS).
It is glossed in 2 different ways: ‘of pentecost’, ‘pentecost’.
OET ACTS 2:1 Greek word=Πεντηκοστῆς (Pentaʸkostaʸs) Morphology=GFS English gloss=‘of pentecost’ SR GNT ACTS 2:1 word 14
OET ACTS 20:16 Greek word=Πεντηκοστῆς (Pentaʸkostaʸs) Morphology=GFS English gloss=‘of pentecost’ SR GNT ACTS 20:16 word 32
OET 1COR 16:8 Greek word=Πεντηκοστῆς (Pentaʸkostaʸs) Morphology=GFS English gloss=‘pentecost’ SR GNT 1COR 16:8 word 7