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contact

1. 
a. a junction of two or more electrical conductors
b. the part of the conductors that makes the junction
c. the part of an electrical device to which such connections are made
2. any person who has been exposed to a contagious disease
3. an informal name for contact lens
4. of or relating to irritation or inflammation of the skin caused by touching the causative agent
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

contact

See eclipse.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Contact

 

the geometric concept signifying that at a certain point, two curves (or a curve and a surface) have a common tangent line or two surfaces have a common tangent plane. The order of contact is a characteristic of the proximity of two curves (a curve and a surface, or two surfaces) in the neighborhood of their common point.

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

contact

[′kän‚takt]
(electricity)
(engineering)
Initial detection of an aircraft, ship, submarine, or other object on a radarscope or other detecting equipment.
(fluid mechanics)
The surface between two immiscible fluids contained in a reservoir.
(geology)
The surface between two different kinds of rocks.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

contact

A part which is an electric conductor and which provides a low-resistance path for current flow upon mating with another conducting part with which it is designed to operate.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

contact

i. An air traffic control term, which, when transmitted on the radio, means “Establish radio contact with … ”
ii. Visual contact by the pilot with another aircraft (friendly, hostile, or unidentified), or object, or target on the ground.
iii. To pick up the target on radar.
iv. A warning call by the pilot when starting a piston engine to the person swinging the propeller to indicate that the ignition system is about to be put on.
v. A mechanical hookup between a tanker and a receiver aircraft.
vi. The act of an aircraft touching down on a runway or another surface after being airborne, as in “the moment of contact.”
vii. Flying in weather and at an altitude from where ground features can be seen continuously, as in contact flying.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

contact

A metal bar or strip in a plug or smart card that touches a corresponding metal object in a socket or reader in order to enable current to pass. Contacts may be made of precious metals to avoid corrosion. See pin and smart card.
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 ?
"I would appeal for anyone with information to contact us as soon as possible."
"Anyone with any concerns about an animal or those who would like to report cruelty should also contact us."
Officers spoke to the man but we were able to eliminate him from the investigation, which is why I would urge anyone with suspicions around someone they know to contact us."
Sgt Tim Pottle said: "We appeal to anyone with any information about this incident to contact us. In particular if anyone has been offered to buy this war compass or has seen it please contact us so we can reunite the compass with its owner.
PC Carolyn White, of Kirklees police, said: This ornamental vase, which is pink and white and features an image of a bird and flowers, is of great sentimental value to the victim and we are appealing for anyone who knows anything about the burglary to contact us via 101.
"We are appealing for anyone who has seen or been in contact with Jasmin, or anyone fitting her description to contact us immediately.
We want to make it easier for people to contact us about financial problems, so we making available this telephone service.
For questions related to articles, IFR technical issues or other editorial matters, contact us at:
Contact us at asktheexpert@dailyrecord.co.uk QI want to sell my house but every estate agent I've contacted wants to charge me hefty upfront fees that I can't afford.
We invite all of you who would like to participate in these conversations to contact us and suggest the topics about which you might like to comment.
"Victims who believe their award has been reduced should contact us because we have processes in place to make sure that we can help the people who do choose to contact us quickly and efficiently."
To ensure the magazine is getting into the hands of our young Airmen, please contact us if your unit is receiving a surplus, or if you have no access to them at all.