'angioleucitis' originates from Greek and New Latin, specifically the words 'angeion' meaning 'vessel', 'leukos' meaning 'white', and the suffix '-itis' meaning 'inflammation'.

'angioleucitis' was formed in modern medical terminology by combining Greek and Latin roots to describe inflammation involving white blood cells in vessels.

Initially, it meant 'inflammation of white blood cells in vessels', and this meaning has remained unchanged in modern medical usage.