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 degenerate. 1  intransitive verb. 2  1 : to pass from a higher to a lower type or condition : deteriorate her fixed mysterious smile degenerated into a fatuous stare â J. C. Powys. 3  2 : to sink into a low intellectual or moral state The debate degenerated into a shouting match.