maintenance: Meaning and Definition of

main•te•nance

1. the act of maintaining.
2. the state of being maintained: the maintenance of friendly relations with England.
3. care or upkeep, as of machinery or property: With proper maintenance the car will last for many years.
4. means of upkeep, support, or subsistence; livelihood: to provide a comfortable maintenance.
5. alimony or child support.
6. an officious meddling in a suit in which the meddler has no interest, by assisting either party with means to prosecute or defend it.

1. administered to sustain a desired physiological or mental condition: maintenance dose.