- To keep from moving or progressing without stopping operation. Also, to maintain at a given value. For example, to maintain a field at a specified intensity.
- To retain information in a storage device. For instance, to hold data in a computer's RAM.
- To interrupt a phone call without disconnecting it. For example, to put a call on hold.
- In a charge storage tube, the use of electron bombardment to maintain storage elements at equilibrium potentials.
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