Femto- is a prefix (see all prefixes) to a unit and means that it is 10-15 times this unit, or, one quindecillionth (European) or one quadrillionth (American).
Examples are one femtosecond or one femtometer. The origin of this prefix is the Danish word femten, which means fifteen.
All Wikipedia text
is available under the
terms of the GNU Free Documentation License
Search Encyclopedia
Search over one million articles, find something about almost anything!
... author and expert on mythology
March 28 - Werner Bahlsen[?], biscuit[?] producer (+ 1985)
April 3 - Sally Rand[?], dancer (+ 1979)
April 7 - Ralph Bunche[?], ...