In a chip, the time it takes for a signal to switch from 0 to 1 or 1 to 0. Although extremely fast, it is not instantaneous and can be measured in picoseconds (ps) and nanoseconds (ns).
"signal slope." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/signal-slope>.
signal slope. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/signal-slope