Text: [ELECTR] A succession of alternately luminous and dark regions sometimes observed in the positive column of a glow-discharge tube near the anode. 1. [n]  a stripe of contrasting color; "chromosomes exhibit characteristic bands" 2. [n]  any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue

See Also:

Source: 4