hi-fi

[[t]ˈhaɪˈfaɪ[/t]]

n. pl. -fis, adj.

1) hfi high fidelity

2) hfi a phonograph, radio, or other sound-reproducing apparatus possessing high fidelity

3) hfi of, pertaining to, or characteristic of such apparatus; high-fidelity

•

Etymology: 1945–50, amer.; by shortening