1. the action of sustaining or maintaining something; support or nourishment
Usage: formal
2. means of support or livelihood
Usage: formal

Examples

• The sustentation of the ancient building required constant repairs.
• His job provided adequate sustentation for his family.
• The charity focused on the sustentation of homeless individuals.
• Proper sustentation of the ecosystem depends on biodiversity.
• The monastery relied on donations for its sustentation.
• Medical sustentation kept the patient stable during recovery.