out of the loop

loop

1 [loop]
noun
1.
a portion of a cord, ribbon, etc., folded or doubled upon itself so as to leave an opening between the parts.
2.
anything shaped more or less like a loop, as a line drawn on paper, a part of a letter, a part of a path, or a line of motion.
3.
a curved piece or a ring of metal, wood, or the like, used for the insertion of something, as a handle, etc.
5.
Aeronautics. a maneuver executed by an airplane in such a manner that the airplane describes a closed curve in a vertical plane.
6.
a circular area at the end of a trolley line, railroad line, etc., where cars turn around.
7.
an arm of a cloverleaf where traffic may turn off or onto a main road or highway.
8.
Physics. the part of a vibrating string, column of air or other medium, etc., between two adjacent nodes.
9.
Electricity. a closed electric or magnetic circuit.
10.
Computers. the reiteration of a set of instructions in a routine or program.
11.
a wire, usually of platinum, one end of which is curved to form a loop, used for transferring microorganisms from one medium to another.
12.
a sand bar that encloses or nearly encloses a body of water.
13.
Figure Skating. a school figure in which a skater traces a large half circle, a small oval within its arc, and another large half circle to complete the figure while remaining on the same skating edge.
14.
the main business district of Chicago.
verb (used with object)
15.
to form into a loop.
16.
to make a loop in.
17.
to enfold or encircle in or with something arranged in a loop.
18.
to fasten by forming into a loop, or by means of something formed into a loop (often followed by up ): to loop up the new draperies.
19.
to cause (a missile or projectile) to trace a looping or looplike trajectory through the air: to loop a grenade into the building.
20.
to fly (an airplane) in a loop or series of loops.
21.
to construct a closed electric or magnetic circuit.
22.
Movies. to complete by means of looping: We still have to loop the final scenes.
verb (used without object)
23.
to make or form a loop: The river loops around the two counties.
24.
to move by forming loops, as a measuringworm.
25.
to trace a looping or looplike path through the air: The fly ball looped high in the air.
26.
to perform a loop or series of loops in an airplane.
27.
Movies. to record dialogue, sound effects, etc., onto an existing film track or soundtrack.
Idioms
28.
in/out of the loop, included in or excluded from a group of people who receive the latest information about something: She’s often out of the loop on policy decisions.
29.
throw/knock for a loop, to astonish or upset: Her quitting the project really threw me for a loop.

Origin:
1350–1400; Middle English loupe loop of cloth, perhaps < Scots Gaelic lub loop, bend

loop, loupe.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
loop1 (luːp)
 
n
1.  the round or oval shape formed by a line, string, etc, that curves around to cross itself
2.  any round or oval-shaped thing that is closed or nearly closed
3.  a piece of material, such as string, curved round and fastened to form a ring or handle for carrying by
4.  an intrauterine contraceptive device in the shape of a loop
5.  electronics
 a.  a closed electric or magnetic circuit through which a signal can circulate
 b.  short for loop aerial
6.  a flight manoeuvre in which an aircraft flies one complete circle in the vertical plane
7.  chiefly (Brit) Also called: loop line a railway branch line which leaves the main line and rejoins it after a short distance
8.  maths, physics a closed curve on a graph: hysteresis loop
9.  another name for antinode
10.  anatomy
 a.  arch Compare whorl the most common basic pattern of the human fingerprint, formed by several sharply rising U-shaped ridges
 b.  a bend in a tubular structure, such as the U-shaped curve in a kidney tubule (Henle's loop or loop of Henle)
11.  computing a series of instructions in a program, performed repeatedly until some specified condition is satisfied
12.  skating a jump in which the skater takes off from a back outside edge, makes one, two, or three turns in the air, and lands on the same back outside edge
13.  a group of people to whom information is circulated (esp in the phrases inorout of the loop)
 
vb
14.  (tr) to make a loop in or of (a line, string, etc)
15.  (tr) to fasten or encircle with a loop or something like a loop
16.  Also: loop the loop to cause (an aircraft) to perform a loop or (of an aircraft) to perform a loop
17.  (intr) to move in loops or in a path like a loop
 
[C14: loupe, origin unknown]

loop2 (luːp)
 
n
an archaic word for loophole
 
[C14: perhaps related to Middle Dutch lupen to watch, peer]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

loop
late 14c., probably of Celtic origin (cf. Gael. lub "bend," Ir. lubiam), influenced by O.N. hlaup "a leap, run." In ref. to magnetic recording tape or film, first recorded 1931. Computer programming sense first attested 1947. The verb meaning "to form a loop" is first recorded 1856. Looped "drunk" is
from 1934. To loop the loop (1902) originally was a stunt of bicycle-riding.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

loop (lōōp)
n.
A curve or bend in a cord or other cylindrical body, forming an oval or circular ring.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Easton
Bible Dictionary

Loop definition


a knotted "eye" of cord, corresponding to the "taches" or knobs in the edges of the curtains of the tabernacle, for joining them into a continuous circuit, fifty to a curtain (Ex. 26:4, 5, 10, 11).

Easton's 1897 Bible Dictionary
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American Heritage
Idioms & Phrases

out of the loop

see under in the loop.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Idioms & Phrases
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