Adelaida is the Spanish form of Adelaide. The name ultimately derives from the Germanic Adalheidis, composed of the elements adal "noble" and heit "kind, sort, type", giving it the meaning "nobleness, nobility".Etymology and HistoryThe name was borne by Saint Adelaide, a 10th-century Holy Roman empress and wife of Otto the Great, who was later canonized. In Spain, the name was adopted as Adelaida, following the phonetic patterns of the Spanish language. While the parallel form Alice (via Old French) has historically been more common in Britain, Adelaide gained popularity in the 19th century due to the German-born wife of King William IV, after whom the city of Adelaide in Australia was named.Usage and VariantsIn Spanish-speaking countries, Adelaida is used as a female given name. Diminutives include Ada (Spanish), Aleida, and Aleyda (Latin American Spanish). The name also has cognates in other languages, such as Alize (Basque), Alisa (Ukrainian), Alícia (Portuguese), Alice (Swedish), Heidi (Swedish), and Ada (Polish).Geographic NamesAdelaida is also the Spanish name for the city of Adelaide in Australia, as noted in both Catalan and Spanish dictionaries. This reflects the historical influence of European naming on Australian geography.Meaning: Nobleness, nobilityOrigin: Germanic, via French and SpanishType: Given nameUsage regions: Spanish-speaking countries