Get the details behind our redesign
"[T]he ancient Greeks & Romans knew what speed was, & yet no-one supposes they called it speed, whence it follows that speedo- & speedometer are barbarisms." [Fowler]Speed bump is 1975; figurative sense is 1990s. Full speed is recorded from 1382. Speed reading first attested 1965. Speedball "mix of cocaine and morphine or heroin" is recorded from 1909.
The ratio of the distance traveled by an object (regardless of its direction) to the time required to travel that distance. Compare velocity.
An amphetamine, esp Methedrine2 (1960s+ Narcotics)Related Terms
in photography, any of those standards that indicate (1) the size of the lens opening, or aperture, (2) the duration of exposure, and (3) the sensitivity of the film to light.