a. the principal first violinist of an orchestra, who plays solo parts, and acts as the conductor's deputy and spokesman for the orchestra
b. US a conductor or director of an orchestra or chorus
a. the first man on a climbing rope
b. the leading horse or dog in a team
3. a statistic or index that gives an advance indication of the state of the economy
6. a strip of blank film or tape used to facilitate threading a projector, developing machine, etc., and to aid identification
7. Botany any of the long slender shoots that grow from the stem or branch of a tree: usually removed during pruning
8. Brit a member of the Government having primary authority in initiating legislative business (esp in the phrases Leader of the House of Commons and Leader of the House of Lords)
9. the senior barrister, usually a Queen's Counsel, in charge of the conduct of a case
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
A vertical pipe that carries rainwater from the roof gutter to the ground or drain system.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
(Russian lider; from English “leader”). (1) The head of a political party, trade union, or other social organization.
(2) The person who is in first place in some competition, such as the leader in a chess tournament or a bicycle race.
the name of a class of ships (such as a large-displacement destroyer) in use in the Soviet Navy in the 1930’s and 1940’s. A leader carried the command of the unit and sailed first in the wake column. The term “leader” is sometimes applied to a vessel that heads a group or vessels of a caravan or fleet equipped for industrial uses or prospecting.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
A record which precedes a group of detail records, giving information about the group not present in the detail records; for example, “beginning of batch 17.”
The unrecorded length of magnetic tape that enables the operator to thread the tape through the drive and onto the take-up reel without losing data or recorded music, speech, or such.
The streamer which initiates the first phase of each stroke of a lightning discharge; it is a channel of very high ion density which propagates through the air by the continual establishment of an electron avalanche ahead of its tip. Also known as leader streamer.
A short piece of blank film at each end of a strip of photographic film or reel of motion picture film, used to thread the film through the mechanism of a camera or projector.
Lines or rows of dashes or dots used to guide the reader's eye across a printed page.
In a hot-air heating system, a duct that conducts heated air to an outlet.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
downspout, conductor, downcomer, downpipe, leader, rain leader, rainwater pipe
A vertical pipe, often of sheet metal,
leader: L; leader head, H; leader shoe, S; leader strap, T
2. A duct for conducting hot air to an outlet in a hot-air heating system.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
leader(1) A length of unrecorded tape used to thread the tape onto the tape drive.
(2) A line of dots or dashes used to draw the eye across the printed page, such as in a table of contents.
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.