A quantity even smaller than epsilon, as small in comparison to epsilon as epsilon is to something normal; completely negligible. If you buy a supercomputer for a million dollars, the cost of the thousand-dollar terminal to go with it is epsilon, and the cost of the ten-dollar cable to connect them is epsilon squared.
Compare lost in the underflow, lost in the noise.
Concurrent simulation language derived from Simone. “EPSIMONE Manual”, J. Beziin et al, Pub Int No 90, IRISA, Sept 1978.
[ep-suh m] /ˈɛp səm/ noun 1. a town in Surrey, SE England, S of London: site of a famous racetrack (Epsom Downs) where the annual Derby is held. /ˈɛpsəm/ noun 1. a town in SE England, in Surrey: famous for its mineral springs and for horse racing. Pop (with Ewell): 64 492 (2001)
[ep-suh-mahyt] /ˈɛp səˌmaɪt/ noun, Mineralogy. 1. the natural form of Epsom salt, Mg 2 SO 4 ⋅7H 2 O, found as a crust in caves and lake deposits.
noun 1. Often, Epsom salts. Chemistry, Pharmacology. hydrated magnesium sulfate, MgSO 4 ⋅7H 2 O, occurring as small colorless crystals: used in fertilizers, the dyeing of fabrics, leather tanning, etc., and in medicine chiefly as a cathartic.