Definition of coupler in English:

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Pronunciation: /ˈkʌplə/


1A thing that connects two things, especially mechanical components or systems: a hydraulic coupler
More example sentences
  • This dramatically reduces the materials needed, since it's easier to bend bars than to use mechanical couplers or splicing-in short bent sections that waste material.
  • Hydraulic quick couplers can save time when switching attachments.
  • It is perfect for storing paper towels to use to clean up hands or to wipe the dirt and grime from hydraulic couplers.
1.1 Music A device in an organ for connecting two manuals, or a manual with pedals, so that they both sound when only one is played.
Example sentences
  • A coupler allows the lower manual to pluck all three registers.
1.2 (also octave coupler) Music A device in an organ for connecting notes with their octaves above or below.
Example sentences
  • Its principals, mixtures, reeds, and octave couplers could deliver enough power to wake the dead.
  • According to the invention, an octave coupler effect is achieved by carrying out the following formula.
  • Two additional octave couplers support the swell organ so that the tonal resources can be used to full advantage.
1.3 Photography A compound in a developer or an emulsion which combines with the products of development to form an insoluble dye, part of the image.
Example sentences
  • It is a silver halide photographic material containing a magenta coupler and a compound that can break the aggregation of an azomethine dye.
  • It is among his choices for an exhibition of chromogenic dye coupler prints that speaks of the alienation and introspection of travel.
1.4 (also acoustic coupler) A modem which converts digital signals from a computer into audible sound signals and vice versa, so that the former can be transmitted and received over telephone lines.
Example sentences
  • This switching matrix has input ports, output ports and a passive optical core consisting of optical couplers.
  • They also had an early 300-baud modem, replete with the coupler into which you had to put the phone receiver.
  • You place the coupler like a mirror image against a telephone handset, strap it in place, plug the other end into your modem and dial.
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