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an excess over what is normal or needed.
iron overload an excess of iron in the body; see hemochromatosis, hemosiderosis, and siderosis.
sensory overload a condition in which an individual receives an excessive or intolerable amount of sensory stimuli, as in a busy hospital or clinic or an intensive care unit; the effects of sensory overload are similar to those of sensory deprivation, including confusion and hallucination.


1 a burden greater than the capacity of the system designed to move or process it.
2 (in physiology) any factor or influence that stresses the body beyond its natural limits and may impair its health.


To exceed the capacity of a cell, physiological process, organism, or system, causing it to fail. overload

circulatory overload

Volume overload.

fluid overload

Volume overload.

iron overload

Organ failure caused by excessive accumulation of iron in the body, usually from frequent transfusions or hemochromatosis.

pressure overload

Demand placed on muscle, esp. heart muscle, in response to high blood pressure or stenotic valves. Over time pressure overload results in cardiac hypertrophy and, eventually, heart failure.

sensory overload

A condition in which sensory stimuli are received at an excessive rate or intensity. Sensory overload can produce increases in heart rate, breathing, blood pressure, confusion, anxiety, mental distress, and/or erratic behavior.

stress overload

Excessive amounts and types of demands that require action.

volume overload

An excess of blood or body fluids in the circulation or extracellular tissues. It is usually caused by transfusions or excessive fluid infusions that increase the venous pressure, esp. in patients with heart disease, and it can result in heart failure, pulmonary edema, and cyanosis.
Synonym: circulatory overload; fluid overload; hypervolemia


a larger load than the system can comfortably bear.

tube overload
when repeated exposures are made at high output. This may vaporize the target or damage the cathode.
veterinary overload
the popular term for the knowledge explosion and the need to learn more by the veterinarian.
References in periodicals archive ?
In the present study the role of Cassia occidentalis particularly its leaves in the elimination of excessive iron from the bodies of artificially iron overloaded rabbits has been studied.
Liquid chemicals injected full-strength into the wash wheel have the potential for coming into contact with fabrics and leaving burns or stains; this is particularly so when chemicals are injected through the top of the machine, when water levels are too low or when the machine is overloaded.
If the wires are still overloaded, they'll promptly shut off again.
The flaws prevented a switch's computer from properly handling the congestion that resulted when messages had to be sent to other telephone network computers to circumvent such problems as a failed circuit board or an overloaded switch, at the same time that the network computers to circumvent such problems as a failed circuit board or an overloaded switch, at the same time that the network had to process a large volume of telephone calls.
It helps businesses get a grip on the financial and human costs of e-mail overload and interruptions and details how working in an information overloaded environment impacts employee productivity, efficiency, and morale.
He said this measure should prevent freak accidents, citing the overloaded bus that fell into a 100-feet ravine in Nueva Ecija last month.
Moreover, during the crackdown fine amounting to Rs 80000 was imposed on about 60 vehicles being overloaded.
LAHORE -- The drive against overloaded vehicles is in progress and fines are being imposed on transporters for overloading without any discrimination.
A TRUCK driver from Weoley Castle has been fined by a court for being behind the wheel of an overloaded vehicle.
The department has recently been given extra cash to detect overloaded vehicles as a result of the campaign's success.
This load cell can be overloaded by 32 times the rated load without damage to the sensor, protected by a dependable mechanical stop.