femtosecondn.
/ˈfɛmtəʊˌsɛk(ə)nd/, U.S. /ˈfɛmtoʊˌsɛkənd/ Chiefly Science.
A unit of time equal to one thousand-million-millionth of a second (10-15 second).
ΚΠ
1962 Newsweek 13 Aug. 47/1 There is a subatomic particle, for example, that decays in one hundred-thousandth of a femtosecond, give or take an attosecond.
1991 Alcalde (Univ. Texas) Jan.–Feb. 20/3 In 100 femtoseconds, light that can travel to the moon and back in just over two seconds covers a distance equal to the thickness of a single sheet of paper.
2006 C. W. Carey Amer. Scientists 410/1 The intense flashes of light lasted for only a few tens of femtoseconds.
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).
<
n.1962- cosmographically
- cosmographies
- cosmographist
- cosmographists
- cosmographize
- cosmography
- cosmogyral
- cosmolabe
- cosmolatries
- cosmolatry
- cosmolatryes
- cosmolatrys
- cosmoline
- cosmologic
- cosmological
- cosmological argument
- cosmological constant
- cosmologically
- cosmologies
- cosmologist
- cosmologists
- cosmology
- cosmometry
- cosmonaut
- cosmonautic