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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 ?
Iron concentrations in blood sera of Rabbits: Parenteral iron overloading through intramuscular injections of iron preparation (Jectosol injections @ 0.
Mrs Watkins said the firm had previously been fined pounds 400 for an overloading offence.
While the vehicles are parked up it will give staff the opportunity to make sure there are effective procedures in place to ensure overloading does not take place again.
There was probably just one instance of overloading a week, of the wagons collecting in total 120,000 bins.
The DIG expressed satisfaction over the progress of the drive and directed the officers to continue hard work for checking overloading on roads and a policy of zero tolerance be adopted in this regard.
She said overloading is still a problem as it is easy for transport operators to avoid weigh-bridges by either using alternative routes without weighbridges or move consignments during times when weighbridges are closed.
Mr Green said the agency had previously prohibited the firm's trucks from being used because of overloading.
Officers hope the crackdown on overloading will lead to an improvement in the safety of Rugby roads.
Special squad set up by RTA Rawalpindi Khalid Yamin conducted raids in different areas of Rawalpindi and checked over 450 vehicles and impounded 17 vehicles for overloading .
The Fijian Transport and Infrastructure Ministrys Permanent Secretary Paul Bayly has revealed that the nation is facing several critical problems including the issue of overloading vehicles.
ISLAMABAD -- The National Highway Authority (NHA) and National Highways and Motorways Police (NH and MP) have been taking specific steps to control overloading of vehicles on Motorways and Highways in the country.