PHA may refer to:
== Science and technology == Phytohaemagglutinin, a type of lectin in plants Polyhydroxyalkanoate, natural polyesters Potentially hazardous asteroid Process hazard analysis of an industrial process Pseudohypoaldosteronism, a condition that mimics hypoaldosteronism but with high levels of aldosteron Pulse-height analyzer, an electronic instrument
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).