Hold (redirected from on hold)

hold¹

1. Wrestling a way of seizing one's opponent

2. Music a pause or fermata

3. 

a. a tenure or holding, esp of land

b. (in combination): leasehold; freehold

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hold²

the space in a ship or aircraft for storing cargo

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hold [hōld]

(aerospace engineering)

A scheduled or unscheduled pause in a testing or launching sequence or countdown of a missile or space vehicle.

(computer science)

To retain information in a computer storage device for further use after it has been initially utilized.

(electronics)

To maintain storage elements at equilibrium voltages in a charge storage tube by electron bombardment.

(engineering)

The interior of a ship or plane, especially the cargo compartment.

(industrial engineering)

A therblig, or basic operation, in time-and-motion study in which the hand or other body member maintains an object in a fixed position and location.

(mechanical engineering)

A machine motion that is halted by an operator or interlock until it is restarted.

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Hold 

an area in the hull of a ship, between the lower deck and the bottom or second bottom.

A hold may be used for cargo, ship’s machinery, or supplies. The number of holds depends on the purpose and size of the ship. On passenger ships the length of the holds is determined by the conditions of unsinkability; for cargo ships, several classification societies regulate the number of holds depending on the length of the ship and establish a maximum length for holds. On refrigerator ships, the holds are lined on the inside with heat insulation. Cargo holds have ventilation equipment and devices for the detection and extinguishing of fires; they are usually loaded and unloaded through cargo hatches.