STI, sti, or Sti may refer to:
==Science and technology== ===Biology and psychology=== Sexually transmitted infection, an infection transmitted through human sexual behavior Signal transduction inhibitor, a class of pharmaceutical compounds Soft tissue injury, the damage of muscles, ligaments and tendons throughout the body Symptom targeted intervention, a treatment model for depression
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).