Advertisement

Advertisement

fifth force

noun

  1. a theoretical force in nature in addition to the strong and weak forces, gravitation, and the electromagnetic force.


fifth force

noun

  1. a hypothetical non-Newtonian repulsive component of the force of gravity, postulated as an addition to the four known fundamental forces (gravitational, electromagnetic, strong, and weak)
“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


fifth force

/ fĭfth /

  1. Any of various hypothetical, very weak forces thought to cause bodies to repel each other. Such forces are occasionally considered as a solution to unexpected deviations in the measured value of the gravitational constant or to explain the apparent acceleration of very distant galaxies away from earth.


Discover More

Word History and Origins

Origin of fifth force1

First recorded in 1975–80

Advertisement

Advertisement

Advertisement

Advertisement


fifth estatefifth-generation