TheraPronunciation: /ˈθɪərə/Definition of Thera a Greek island in the southern Cyclades. The island suffered a violent volcanic eruption in about 1500 bc; remains of an ancient Minoan civilization have been discovered beneath the pumice and volcanic debris. Also called Santorini.Greek name Thíra.Thera in other Oxford dictionaries Definition of Thera in the US English dictionary
