| 1. | a breaking down, wearing out, or sudden loss of ability to function efficiently, as of a machine. |
| 2. | a loss of mental or physical health; collapse. Compare nervous breakdown. |
| 3. | an analysis or classification of something; division into parts, categories, processes, etc. |
| 4. | Chemistry.
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| 5. | Electricity. an electric discharge passing through faulty insulation or other material used to separate circuits or passing between electrodes in a vacuum or gas-filled tube. |
| 6. | a noisy, lively folk dance. |

breakdown break·down (brāk'doun')
n.
The act or process of failing to function or continue.
A typically sudden collapse in physical or mental health.
Disintegration or decomposition into parts or elements.