Something that can be worn on the body, or technology designed to be worn like smartwatches and fitness trackers.
From wear (to have clothing on one's body) + -able (able to be). This modern usage emphasizing technology became common in the 21st century.
Wearable tech might seem brand new, but the first commercial wearables were pedometers in the 1960s—and the idea of tracking your steps is so appealing that companies have sold billions of them!
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