- Io
- I•o[[t]ˈaɪ oʊ, ˈi oʊ[/t]] n.1) myt (in Greek myth) a woman loved by Zeus and changed by him into a heifer, which Hera claimed and put under Argus' guardianship2) astron. a large volcanically active moon of Jupiter
From formal English to slang. 2014.