1340 degrees Fahrenheit centiohm. com millifarad. com microkelvin. com picohertz. com - once every 31,689 years picojoule. com femtogram. com - mass of a single virus yoctogram. com - a hydrogen atom weighs 1.66 yoctograms zeptomole. com - 602 molecules.    From Wordnik.com.  [Planet Debian] Reference