Medical Definition of satellite
1: a short segment separated from the main body of a chromosome by a constriction—called also trabant
2: the secondary or later member of a chain of gregarines
3: a bodily structure lying near or associated with another (as a vein accompanying an artery)
4: a smaller lesion accompanying a main one and situated nearby
5: a spectral line of low intensity having a frequency close to that of another stronger line to which it is closely related (as by having a common energy level)
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