loop

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈluːp/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/lup/ ,USA pronunciation: respelling(lo̅o̅p)


WordReference Random House Learner's Dictionary of American English © 2020
loop1 /lup/USA pronunciation   n. [countable]
  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.
  3. Medicineintrauterine device.
  4. Computingthe repeating of a set of instructions in a computer routine or program.
  5. Informal Termsthe loop, a group or network of people who have inside information or who are influential or powerful;
    inner circle:He was kept out of the loop on policy decisions.

v. 
  1. to form into a loop:[+ object]looping his shoelaces.
  2. to make or form a loop: [no object]The river loops around the two counties.[+ object]The pilot looped her plane.
Idioms
  1. Idiomsthrow or knock (someone) for a loop, to overwhelm with surprise or confusion.


WordReference Random House Unabridged Dictionary of American English © 2020
loop1  (lo̅o̅p),USA pronunciation n. 
  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.
  4. MedicineSee  intrauterine device. 
  5. Aeronauticsa maneuver executed by an airplane in such a manner that the airplane describes a closed curve in a vertical plane.
  6. Rail Transporta circular area at the end of a trolley line, railroad line, etc., where cars turn around.
  7. Transportan arm of a cloverleaf where traffic may turn off or onto a main road or highway.
  8. Physicsthe part of a vibrating string, column of air or other medium, etc., between two adjacent nodes.
  9. Electricitya closed electric or magnetic circuit.
  10. Computingthe 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. Sport[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 loop, a group or network of insiders or influential people;
    inner circle:to be out of the loop on policy decisions.
  15. Place Namesthe Loop, the main business district of Chicago.
  16. Idiomsthrow or  knock for a loop, to astonish or upset:Her quitting the project really threw me for a loop.

v.t. 
  1. to form into a loop.
  2. to make a loop in.
  3. to enfold or encircle in or with something arranged in a loop.
  4. to fasten by forming into a loop, or by means of something formed into a loop (often fol. by up):to loop up the new draperies.
  5. to cause (a missile or projectile) to trace a looping or looplike trajectory through the air:to loop a grenade into the building.
  6. Aeronauticsto fly (an airplane) in a loop or series of loops.
  7. Electricityto construct a closed electric or magnetic circuit.
  8. Cinema, Show Business[Motion Pictures.]to complete by means of looping:We still have to loop the final scenes.

v.i. 
  1. to make or form a loop:The river loops around the two counties.
  2. to move by forming loops, as a measuringworm.
  3. to trace a looping or looplike path through the air:The fly ball looped high in the air.
  4. Aeronauticsto perform a loop or series of loops in an airplane.
  5. Cinema, Show Business[Motion Pictures.]to record dialogue, sound effects, etc., onto an existing film track or soundtrack.
  • Scots Gaelic lub loop, bend
  • Middle English loupe loop of cloth, perh. 1350–1400

loop2  (lo̅o̅p),USA pronunciation n. [Archaic.]
  1. a small or narrow opening, as in a wall;
    loophole.
  • 1300–50; Middle English loupe window; compare Middle Dutch lūpen peep, peer

loop3  (lo̅o̅p),USA pronunciation n. [Metalworking.]
  1. a hot bloom of pasty consistency, to be worked under a hammer or in rolls.
  • French loupe, special use of loupe wen, knob, gnarl Gmc. See loupe
  • 1665–75

Collins Concise English Dictionary © HarperCollins Publishers::
loop /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. a closed electric or magnetic circuit through which a signal can circulate
  6. a flight manoeuvre in which an aircraft flies one complete circle in the vertical plane
  7. Also called: loop line chiefly Brit a railway branch line which leaves the main line and rejoins it after a short distance
  8. a closed curve on a graph: hysteresis loop
  9. the most common basic pattern of the human fingerprint, formed by several sharply rising U-shaped ridges
    Compare arch1
  10. a bend in a tubular structure, such as the U-shaped curve in a kidney tubule (Henle's loop or loop of Henle)
  11. a series of instructions in a program, performed repeatedly until some specified condition is satisfied
  12. 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 in or out of the loop)
vb
  1. (transitive) to make a loop in or of (a line, string, etc)
  2. (transitive) to fasten or encircle with a loop or something like a loop
  3. Also: loop the loop to cause (an aircraft) to perform a loop or (of an aircraft) to perform a loop
  4. (intransitive) to move in loops or in a path like a loop
Etymology: 14th Century: loupe, origin unknown
'loop' also found in these entries (note: many are not synonyms or translations):
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