femto-

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a combining form used in the names of units of measurement which are 10−15 (one quadrillionth) smaller than the unit denoted by the base word.

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His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Origin of femto-

<Danish, Norwegian femt(en) fifteen + -o-

Words nearby femto-

femme de chambre, femme fatale, femmy, femoral, femoral artery, femto-, femtometer, femur, fen, fenagle, fence

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British Dictionary definitions for femto-

femto-

prefix

denoting 10 –15femtometer Symbol: f

Word Origin for femto-

from Danish or Norwegian femten fifteen

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012