a system to display a transcription of the audio portion of a television program as it occurs, either verbatim or in edited form; also closed caption
When my husband is reading, I watch television with closed-captioning.
noun, Chemistry. 1. three or more atoms linked together to form a ring or cycle and represented accordingly by its structural formula. noun 1. (chem) another name for ring1 (sense 18) closed chain (klōsd) An arrangement of atoms of the same type that forms a ring. Benzene and naphthalene are closed-chain compounds.
- Closed chain compound
closed chain compound n. See cyclic compound.
- Closed chest massage
closed chest massage n. Cardiac massage in which pressure is applied over the sternum.
noun, Electricity. 1. a circuit without interruption, providing a continuous path through which a current can flow. noun 1. a complete electrical circuit through which current can flow when a voltage is applied Compare open circuit closed circuit