The name 'Stóra Dímun' means 'Great Dimun', in contrast to 'Lítla Dímun' or 'Little Dimun'. According to the Faroese placename expert Jakobsen, 'Dimun' may represent a pre-Norse, Celtic placename element, with 'di' representing 'two'. Stora and Litla Dímun shows a pairing of two distinctive but separate localities in one name. Gammeltoft concluded Dímun is a Scandinavian place name for a double-peaked feature of a particular appearance, reflecting a linguistic contact between Scandinavians and Gaels.
