maintenancemain·te·nance /ˈmeɪntənəns/ noun [uncountableU]1MANUFACTURINGthe repairs, painting etc necessary to keep something in good condition or working as it shouldThe line will be re-opened once essential maintenance is completed.
Technicians were doing routine maintenance work on the aircraft.
2when something is continued in the same way or at the same level as beforemaintenance ofThe maintenance of economic growth is very important.
→ resale-price maintenance3money paid by a DIVORCED person (=someone who has legally ended their marriage) to their former wife or husband, especially towards the cost of looking after their childrenSYN BrE child support, AmE alimonyHe has to pay £500 per week maintenance to his ex-wife.