What's the difference between i.e. and e.g.?
also spacey, 1885, "large, roomy, spacious," from space (n.) + -y (2). Meaning "felt as characteristic of outer space" (especially with reference to electronic music) is attested from 1971, probably influenced by spaced-out (1965, American English slang), a reference to the behavior of people using hallucinogenic drugs (see space (v.)).