Trisha has two parallel origins. In Sanskrit, tṛṣṇā (तृष्णा) means "thirst" or "desire" — a deeply philosophical word in Buddhist and Hindu thought, representing the craving that perpetuates suffering. In English, Trisha is also the diminutive of Patricia — from the Latin patricius, meaning "noblewoman."
Trisha entered the U.S. In India, the South Indian actress Trisha Krishnan is a major star. Today the name sits in the U.S. top 800.
Trisha 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 Trisha reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.