• Webster's Revised Unabridged Dictionary
    • Dys- An inseparable prefix, fr. the Greek dys- hard, ill, and signifying ill bad hard difficult, and the like; cf. the prefixes, Skr. dus-, Goth. tuz-, OHG. zur-, G. zer-, AS. to-, Icel. tor-, Ir. do-.
    • ***
Century Dictionary and Cyclopedia
    • dys- An inseparable prefix in words of Greek origin, signifying ‘hard, difficult, bad, ill,’ and implying some difficulty, imperfection, inability, or privation in the act, process, or thing denoted by the word of which it forms a part.
    • ***


In literature:

After a few uncertain "J-u-u-dys," he trudged on again in silence.
"A Son of the City" by Herman Gastrell Seely
DYS'ENTERY is a disease of an acute type, due to the action of a bacillus, characterized by pain and frequent passage of blood and mucus.
"The New Gresham Encyclopedia" by Various

In news:

A brand new Department of Youth Services (DYS) facility for teenage girls opened on the grounds of Westborough State Hospital in June.

In science:

Correlations between zeros of a random polynomial
This process begins by noting the surface brightness relationship iS (xS , yS ) dxS dyS = iT (xT , yT ) dxT dyT , expressing the fact that if the area element is transformed according to the map, the number of photons leaving the source in that area will be the number observed in the image.
Observations of cluster substructure using weakly lensed sextupole moments
In 1962, Dyson [Dys] introduced three ensembles of random unitary matrices with a view to simplifying the study of energy level behavior in complex quantum systems.
CMV matrices in random matrix theory and integrable systems: a survey
Since the correlation functions {ρn β } of µdys,β have the expression (2.17) and the kernels Kβ are bounded, (A.1) and (A.5) are clear.
Infinite-dimensional stochastic differential equations related to random matrices
Indeed, we proved that µdys,β is a quasi-Gibbs measure and deduced the closability for k = 0 from this.
Infinite-dimensional stochastic differential equations related to random matrices