1. people who are sick, injured, or disabled
Usage: plural of invalid

1. declares something legally void or without effect
Usage: third person singular present of invalid
2. removes someone from active duty due to illness or injury
Usage: third person singular present of invalid; military

Examples

• The hospital provides special care for invalids who cannot care for themselves.
• Many war invalids received pensions from the government.
• The court invalids contracts that were signed under duress.
• A technical error invalids the entire test results.
• The army invalids soldiers who suffer serious injuries in combat.
• The new evidence invalids their previous conclusions.
• The nursing home cares for elderly invalids with compassion.