1. plural of brittleness; the quality or state of being brittle; tendency to break or snap easily under stress or pressure
Usage: countable plural form; often used in technical or scientific contexts
2. plural of brittleness; lack of emotional resilience or stability; tendency to be easily upset or emotionally fragile
Usage: figurative use; less common than the physical sense

Examples

• The brittlenesses of different types of glass vary depending on their composition.
• Extreme cold increases the brittlenesses of many metals and plastics.
• The brittlenesses of the old ceramic tiles made them prone to cracking.
• Scientists studied the brittlenesses of various materials under stress.
• The brittlenesses of his emotional state became apparent during the crisis.
• Engineers must account for the brittlenesses of certain alloys in their designs.