Earlier this month, Tesla and SpaceX CEO Musk announced the birth of the boy in a post on Twitter, revealing that his son was called “X Æ A-12 Musk.”
However, speculation emerged that the unusual moniker could be wrong in the California law of the couple’s residence, as the names can only use the 26 alphabetic characters in the English language, according to the state constitution.
On Sunday, Grimes posted a new photo on Instagram, with comments from fans.
“X Æ A-Xii” wrote the singer in response without confirming the reason for the change.
The singer also responded to another comment, saying: “Roman numerals. Looks better.”
Grimes previously shared the meaning of the name for fascinated fans.
The Canadian musician – real name Claire Elise Boucher – declared “X” stands for “the unknown variable.”
At the same time, “Æ” is the Elven spell of AI, which is short for artificial intelligence and the word “love” in several languages, including Japanese.
“A-12 = precursor to SR-17 (our favorite aircraft). No weapons, no defenses, only speed. Great in combat, but non-violent,” she added.
“A” in the name also represents “the Archangel,” which she described as her favorite song.
Fans were also interested in pronouncing the name, and the happy couple seemed to have different interpretations.
“It’s just X, like the letter X. Then A.I. Like how you said the letter A when I did,” Grimes wrote in response to a question on Instagram.
However, Musk told podcast host Joe Rogan another pronunciation of the name.
“I mean it’s just X, the letter X. And then it’s Æ, which is pronounced ‘Ash’ … and then, A-12, A-12 is my contribution,” he said.
X Æ A-Xii is the couple’s first child together. Musk has five other children – the twins Griffin and Xavier and the triplets Damian, Saxon and Kai – from a previous marriage.