The source said: "[The name is] inspired by the beautiful colors of the water across the globe in destinations like the Maldives, Bahamas, and Bora Bora.
"Cyan is the colour between green and blue in the color spectrum."
Adriana announced her pregnancy in February when she made her TikTok debut with a video that featured her getting her own back on Andre after he had made her jump out of her skin.
In the clip, her boyfriend makes her jump several times before she wakes him up to show him the pregnancy test displaying "pregnant".
A sonogram was then shown with a heartbeat heard before revealing that the unborn tot is due in "fall 2022" in the caption.
Adriana previously admitted motherhood changed "everything" in her life.
The Ocean's 8 star confessed that her beauty and self-care regimes went "out the window" at times as she focused her attention on her children.
She said: "Becoming a mother changes everything. Beauty and self-care go out the window sometimes.
"But as my two daughters have gotten older, I've realised that they copy a lot of what I do and my habits, and it's important for me to make sure they're copying good ones."