1. not equal in value, measure, force, effect, or significance; not equivalent
Usage: formal; technical

Examples

• The two mathematical expressions are nonequivalent despite appearing similar.
• The researcher found that the treatment groups were nonequivalent in their baseline characteristics.
• These nonequivalent fractions cannot be directly compared without conversion.
• The study design used nonequivalent control groups to measure the intervention’s effect.
• The translations were nonequivalent, each capturing different nuances of meaning.
• Nonequivalent test forms were administered to prevent cheating during the exam.