A wooden board used for cutting bread, or in electronics, a construction base used to build temporary circuits without soldering.
Compound of bread + board. The baking/kitchen sense is ancient, while the electronics meaning emerged in the 1970s-80s when engineers needed reusable prototyping surfaces.
The word 'breadboard' beautifully shows how old kitchen terms get repurposed for modern technology—engineers borrowed a baker's tool name for building experimental circuits!
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