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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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

solar collector

A device designed to absorb radiation from the sun and transfer this energy to a fluid which passes through the collector.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.


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.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved


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.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Caption: Figure 9: Efficiency characteristics of flat plate collector variant VC2 and vacuum tube collectors.
In the Northern Hemisphere, most solar collectors for water heating will tolerate a small amount of shade and should be mounted within 30 degrees of true south.
The agency said the rules it plans to issue would require collectors to verify detailed information about a person before contacting them about a debt.
Global Banking News-September 14, 2015--Chubb Canada launches Masterpiece(R) Collector Vehicle Insurance Policy
Installing solar collectors reduces power consumption by some 2,400 KWh per building over a period of 12 months.
CLINTON -- Meaghan Ball has announced her candidacy for re-election as Clinton tax collector. The following is her statement:
7 January 2014 - US NSM Insurance Group Inc said today it had taken over American Collectors Insurance, without disclosing financial details.
Speaking to Qatar Tribune about the objectives of the exhibition, Mayssa Fattouh, KAC's artistic director and curator commented that "the exhibition aims at being the platform for a conversation, a dialogue between collectors of artworks, artists as well as people on how one perceives the artwork in the context of an art gallery versus a house, or the place where the collectors exhibit their art." The exhibition consists of a series of images documenting the private spaces of collectors, in which they have placed the works of art.
Underscoring its role as a vital cultural meeting point connecting the Middle East and Asia with the rest of the world, Art Dubai 2011 was attended by curators, collectors, gallerists, artists, museum directors and more than 60 museum groups.
PowerCore pack At the core of the Torit PowerCore collector is the PowerCore filter pack, which combines the patented Ultra-Web nanofibre technology with Donaldson's media configuration expertise.
The energy crisis and the introduction of tax credits encouraged many manufacturers to develop constantly improving solar collectors. But to be viable on the market, these products had to be SRCC certified by either of these two labs.