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1. a person employed to collect debts, rents, etc.
2. the head of a district administration in India
3. a person who collects or amasses objects as a hobby
4. Electronics the region in a transistor into which charge carriers flow from the base



in agricultural irrigation, a drainage pipe or canal that receives water from the regulating part of an irrigation network (drainage gutters) and sends it out of the area being drained.


A semiconductive region through which a primary flow of charge carriers leaves the base of a transistor; the electrode or terminal connected to this region is also called the collector.
An electrode that collects electrons or ions which have completed their functions within an electron tube; a collector receives electrons after they have done useful work, whereas an anode receives electrons whose useful work is to be done outside the tube. Also known as electron collector.
A class of instruments employed to determine the electric potential at a point in the atmosphere, and ultimately the atmospheric electric field; all collectors consist of some device for rapidly bringing a conductor to the same potential as the air immediately surrounding it, plus some form of electrometer for measuring the difference in potential between the equilibrated collector and the earth itself; collectors differ widely in their speed of response to atmospheric potential changes.

solar collector

A device designed to absorb radiation from the sun and transfer this energy to a fluid which passes through the collector.


accumulatorclick for a larger image
accumulatorclick for a larger image
i. A reservoir that supplies fluid under pressure, when desired. In a typical hydraulic system, it consists of a steel cylinder closed at one end and connected to the pressure line at the other, as well as a floating piston. The piston separates hydraulic fluid from compressed nitrogen/air. Hydraulic fluid under pressure can be stored in the system. The accumulator reduces the pump's peak demands, dampens the pressure ripple, and acts as a reserve of fluid and an emergency power source.
ii. A device sometimes incorporated into the fuel system of a gas turbine engine to store and release fuel under pressure as an aid in starting. Also called a collector.
iii. A device for storing fuel in a fuel tank for inverted flying.
iv. In pneumatic and oxygen systems, the reservoir where compressed air or oxygen is stored.
v. An electrical storage battery that can be recharged.


One side of a bipolar transistor. When the base is pulsed, current flows from the emitter to the collector, or vice versa depending on the design. See drain.
References in periodicals archive ?
Lapena designated Collector Romeo Allan Rosales as the new acting chief of the Customs Intelligence Division and district commanders of BOC's Enforcement and Security Service.
Original creditors also often sell their consumers debts to debt buyers that may collect on the purchased debts or hire third-party debt collectors to recover them.
After the state pays out the 48 cents per pound of covered e-scrap, recyclers are committed to paying 20 cents per pound to authorized collectors who deliver material to them.
Others, such as collector Ortiz, note that source countries maintain warehouses and storerooms filled with thousands of uncatalogued antiquities, many of which are just "rotting away.
Another factor in determining collector status is frequency of use.
It is a common practice to seed a new set of bags or cartridges in the collector prior to placing the unit in service.
The requirements of FDCPA are: (i) the debt collector may not use any false, deceptive, or misleading representation in connection with the collection of any debt and (ii) the debt collector must inform the debtor within five days after the initial "communication" of the amount of the debt, that the debtor's failure to dispute the debt within thirty days will cause the debt to be assumed to be valid ("validation notice") and (iii) the debt collector must disclose that in attempting to collect the debt, any information obtained will be used for that purpose.
Some strategies that may be useful in fulfilling goals to preserve and perpetuate the collection with benefits to the collector, the collector's family, and the museum or other charitable organization that will become responsible for the collection in order of increasing complexity are as follows:
These wounds can't compare, however, to the tribulations the dinosaur has suffered since fossil collectors first dug it up in August 1990 on land owned by a South Dakota rancher named Maurice Williams.
Fortunately, the collector discovered his stamp's absence before the vacuum cleaner's bag was emptied, and there the stamp was found, considerably the worse for wear.