The spelling of the word "jorda" can be explained using the International Phonetic Alphabet (IPA). The root word comes from the Norwegian language which means "earth" or "land". In IPA, "j" is pronounced as [j], which represents the "y" sound in English. Meanwhile, "o" is pronounced as [ɔ], similar to the "or" sound in English. Lastly, "r" is pronounced as [ɾ], a single flap sound. Thus, the correct pronunciation of "jorda" is [ˈjɔɾdɑ].
The word "jorda" has its etymology in the Old Norse language. It can be traced back to the Old Norse words "jǫrð" or "jǫrðin" which meant "earth" or "ground". These Old Norse words further derived from the Proto-Germanic word "*erþō" with the same meaning. The Proto-Germanic word then originated from the Proto-Indo-European root "*er-" which signifies "earth" or "land". Over time, the word "jorda" has been adopted and adapted into various modern Scandinavian languages, including Norwegian, where it still retains its original meaning of "earth" or "land".