Adi (עֲדִי) is the Hebrew word for "jewel" or "ornament." Used as a unisex name in modern Israel.
Adi is widely used in Israel.
Adi does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Adi reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.