Ailanny is a recent American coinage with no established etymology. We include it because it was one of the fastest-rising girls' names in the United States in 2025, not because we can trace its roots.
Ailanny 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.
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In Pythagorean numerology the letters of Ailanny reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.