1. A celestial body that orbits a planet; a moon. 2. An object launched to orbit Earth or another celestial body. 3. One who attends a powerful dignitary; a minion. 4. A political entity dominated politically and economically by another. 5. A short segment of a chromosome separated from the rest by a constriction, typically associated with the formation of a nucleolus. 6. A colony of microorganisms whose growth in culture medium is enhanced by certain substances produced by another colony in its proximity.
