Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun add-in

1 sense of add-in

Sense 1
circuit board, circuit card, board, card, plug-in, add-in -- (a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities)
       => printed circuit -- (computer circuit consisting of an electronic sub-assembly; copper conductors are laminated on an insulating board or card and circuit components are inserted into holes and dip soldered)

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