Relating to the ability to store electrical charge or relating to electrical capacitance.
From 'capacity' (Latin 'capacitas') plus -ive suffix, originally meaning 'able to hold' and now specifically referring to electrical storage properties.
Your phone's touch screen works through capacitive sensing—it detects the electrical charge in your finger, which is why touchscreens don't work with regular gloves but do work with special capacitive-touch gloves!
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