1. plural of compactness; the quality or state of being compact; denseness or tightness of arrangement or structure
Usage: typically used in technical, scientific, or formal contexts
2. plural of compactness; the quality of being small and efficiently designed or arranged

Examples

• The compactnesses of the two designs were compared to determine which was more efficient.
• Engineers valued the compactnesses of the new engine models.
• The compactnesses of urban apartments require creative furniture solutions.
• Different materials exhibit varying compactnesses depending on their molecular structure.
• The compactnesses of the data files allowed them to be stored on a single drive.