yoctometer

Etymology
en

Noun

 * 1) * 2012, Mark Cendrowski, The Big Bang Theory, Season 5, Episode 18, "The Werewolf Transformation":
 * Sheldon Cooper: My hair is growing at the rate of 4.6 yoctometers per femtosecond.
 * Sheldon Cooper: My hair is growing at the rate of 4.6 yoctometers per femtosecond.