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.
British English: degenerate VERB. If you say that someone or something degenerates, you mean that they become worse in some way, for example weaker, lower in quality, or more dangerous.Inactivity can make your joints stiff, and the bones may begin to degenerate.