IPA: /ɪˈpɪstæk.sɪs/
KK: /ɪˈpɪstəksɪs/
A condition where blood flows from the nose, often due to injury or other factors.
After the fall, he had an epistaxis that required medical attention.
Epistaxis is derived from the Greek "epi-" (meaning upon) and "staxis" (meaning a dripping or flow). The term refers to a condition where blood flows from the nose, hence it describes blood dripping from the nose.
Think of blood 'dripping' ('staxis') 'upon' ('epi-') the surface, which helps you remember that epistaxis refers to nosebleeds.