hairy cell leukemia a form of chronic leukemia marked by splenomegaly and by an abundance of abnormal large mononuclear cells covered by hairlike villi (hairy cells) in the bone marrow, spleen, liver, and peripheral blood.
A set of orbitals are said to be degenerate if they all have the same energy. This degeneracy can sometimes be lifted by external electric or magnetic fields.
Definition of degeneration. 1 : degenerate (see 1degenerate) condition. 2 : a lowering of effective power, vitality, or essential quality to an enfeebled and worsened kind or state the country's degeneration into chaos â¦ enacts the degeneration of politics into televisual entertainment â¦ â Linda Holt.