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.
orbital. adj. 1. of or denoting an orbit. 2. (of a motorway or major road circuit) circling a large city. n. 3. (Atomic Physics) a region surrounding an atomic nucleus in which the probability distribution of the electrons is given by a wave function. 4. (Atomic Physics) an orbital road. (ËÉr bÉª tl). adj. n.