Grimes has attempted to explain the meaning behind the unusual name given to her newborn son, X Æ A-12 Musk.
The Canadian singer and Tesla co-founder Elon Musk prompted almost universal bemusement when they revealed the moniker they had chosen for their first child.
But breaking down the elements, the 32-year-old said “X” represents the “unknown variable”, while “Æ” has several interpretations as it is the “elven spelling” of “Ai” – which means love in Chinese, and is also an acronym for artificial intelligence.
The “A-12”, meanwhile, is “our favourite aircraft”, she said, referring to her partner and son’s father.
She pointed out the aircraft was developed from the SR-71, which had “no weapons, no defenses, just speed.”
•X, the unknown variable ⚔️
•Æ, my elven spelling of Ai (love &/or Artificial intelligence)
•A-12 = precursor to SR-17 (our favorite aircraft). No weapons, no defenses, just speed. Great in battle, but non-violent 🤍
(A=Archangel, my favorite song)
(⚔️🐁 metal rat)
— ꧁ ༒ Gℜiꪔ⃕es ༒꧂ 🍓🐉🎀 小仙女 (@Grimezsz) May 6, 2020
“Great in battle, but non-violent,” she added.
Finally, the “A” also refers to the singer’s favourite song, “Archangel”.
She then completed her tweet by writing “metal rat”, which is believed to be a reference to the Chinese zodiac year.
Musk and Grimes – whose real name is Claire Elise Boucher – have been in a relationship for more than two years and made their public debut as a couple at the 2018 Met Gala.
This year’s Met Gala should have taken place on Monday night, but was cancelled due to the COVID-19 pandemic.
South African-born Musk confirmed the birth of X Æ A-12 on Tuesday, although the couple have yet to explain how the name should be pronounced.
In his tweet, the 48-year-old said “Mom & baby all good”, although Grimes tweeted later on Wednesday to say she was recovering from surgery and was “barely alive”.
She gave no further details.
A pic of you holding the baby would break the internet … please share one 🤞
— Viv 🐉 (@flcnhvy) May 5, 2020
Musk, who is one of the world’s richest men, also has five children with his first wife, Canadian author Justine Wilson.
The 48-year-old recently made headlines after posting a series of tweets that saw $13bn wiped off Tesla’s share price, although they jumped back up a few days later.
His criticism of coronavirus lockdown restrictions in the US – despite the high number of deaths – was also the subject of widespread coverage.
However on Wednesday, Musk appeared to be fully focused on fatherhood, tweeting that he felt it was “a time for dad jokes.”