1. The plural of conductivity; the ability or capacity of a material to conduct electric current or heat.
Usage: Commonly used in physics and materials science.; Often refers to electrical conductivity or thermal conductivity.

Examples

• Different metals have different electrical conductivities.
• The conductivities of semiconductors can be modified by adding impurities.
• Scientists measured the thermal conductivities of various insulating materials.
• Copper and silver have among the highest electrical conductivities of all metals.
• The conductivities of solutions depend on the concentration of dissolved ions.
• Engineers compared the conductivities of different alloys for the new circuit design.