In Celtic mythology, Adsullata was a river goddess of the Continental Celts associated with the River Savus (Sava) in Noricum.[1] This deity is known from a single inscription found at Saudörfel, Austria.
Later she came to Brittany from Celtic Gaul and was believed to be a goddess of hot springs and the origin of the Anglo-Celtic sun goddess, Sul.
This theonym appears to be derived from Proto-Celtic *Ad-sūg-lat-ā. That derivation literally means "(allative) sucking liquid," which may have been a byword for the notion of ‘suck-giving liquid’ (cf. [1] [2] [3]). The Romano-British form of this Proto-Celtic reconstruction would likely have been *Adsuglata (cf. [4] [5] [6] [7]).