1. The plural of directivity; the quality or property of being directive or having a preferred direction of effect, transmission, or reception.
Usage: technical; commonly used in physics, engineering, and telecommunications
2. In acoustics and antenna theory, measures of how concentrated or focused the radiation or reception pattern is in a particular direction.
Usage: technical; field-specific to engineering and physics

Examples

• The antenna's directivities were measured across multiple frequency bands.
• Engineers optimized the directivities of the microphone array to reduce background noise.
• Different speaker designs exhibit varying directivities depending on their frequency response.
• The directivities of the radar system allowed it to focus on specific targets.
• Acoustic directivities play a crucial role in concert hall design.