Definition of transmitter in US English:

transmitter

noun

  • 1A set of equipment used to generate and transmit electromagnetic waves carrying messages or signals, especially those of radio or television.

    • ‘One of the patrolmen signaled frantically on a small portable transmitter for help.’
    • ‘Using a 10 watt transmitter, it can be heard by 2,847 families.’
    • ‘I told you those FM radio transmitters were illegal in the UK!’
    • ‘Governments hoping to earn a fast buck by switching off analogue television transmitters and selling the frequencies to cellphone operators are in for a shock.’
    • ‘And devices using a car's power outlet and a cassette player or a small radio transmitter are available.’
    • ‘On the other, we are anxious about the impact of a mobile phone transmitter mast in our neighbourhood.’
    • ‘The researchers used quartz crystals, like the wave transmitters in televisions and radios, which vibrate in an electrical field.’
    • ‘All spacecraft carry a radio transmitter, used for transmitting both data about the spacecraft itself and about the scientific measurements.’
    • ‘Campaigners fear radiation from mobile phone transmitters can cause cancer or other health problems.’
    • ‘Conversely, radio waves from a transmitter operating near the cable will enter the cable through these slots.’
    • ‘We attached satellite transmitters to turtles that had just finished nesting.’
    • ‘Other covert radio transmitters available from security equipment dealers have serious drawbacks.’
    • ‘With just a couple of electronic components that cost at most a dollar or two, you can build simple radio transmitters and receivers.’
    • ‘The new solar powered FM transmitter will broadcast 24 hours a day with programmes predominantly in Pashto and Persian.’
    • ‘A radio transmitter is activated alerting rescue teams to their whereabouts.’
    • ‘These are transmitters that use radio waves to communicate with mobile phone handsets.’
    • ‘More than a dozen eavesdropping and jamming units, telephone exchanges, and radio and television transmitters were attacked.’
    • ‘The battle was eventually won and the phone company agreed to erect a smaller transmitter in its place.’
    • ‘The march of phone transmitter masts is proving unstoppable.’
    • ‘A wireless receiver unit receives the output signal transmitted by the transmitter.’
    listening device, hidden microphone, receiver, wire, wiretap, phone tap, tap
    View synonyms
    1. 1.1 A person or thing that transmits something.
      ‘reggae has established itself as the principal transmitter of the Jamaican language’
      • ‘Despite frequent inconsistencies and misapprehensions, the work was a principal transmitter of ancient science and Neoplatonic thought to the western Middle Ages.’
      • ‘Firstly, the teacher is viewed not as a transmitter of knowledge but as a guide who facilitates learning.’
      • ‘With low prevalence it makes sense to address the core transmitters, such as prostitutes and their clients.’
      • ‘We must never forget that educators are not just transmitters of knowledge but cultivators of souls.’
      • ‘Chapter 3 discusses universities as producers and transmitters of economically useful knowledge, primarily technological knowledge.’
      • ‘The queen's principal role was as bearer and transmitter of royalty, of which she took possession on the death of her husband.’
      • ‘Prisoners constitute a core transmitter group for HIV.’
    2. 1.2
      • ‘It is more difficult to deplete the supply of amine transmitters, which are made in the nerve terminal itself, so the ratio of the two transmitters released by nerve impulses will change.’
      • ‘So this is a lock and key mechanism for a chemical called nicotine which we all know of, but which in the brain is actually a chemical transmitter.’
      • ‘Specifically, nicotine acts at the nicotinic receptor class for the transmitter acetylcholine.’
      • ‘Other timely subjects included in this section are amino acid transmitters and neurodegenerative disorders.’
      • ‘Parkinson's disease is first off the rank in stem cell work, because in theory all you need to do is place dopamine producing nerve cells in the brain to replace the lost transmitter.’
      • ‘This results in rebound of the previously suppressed stimulatory transmitters (serotonin, norepinephrine and dopamine).’
      • ‘The chemical transmitter that mediates the change to pressures within the bowel has been identified as serotonin, a chemical found in the brain as well as in the bowel.’
      • ‘The cells, nerves and transmitters in the brain are attacked during the course of the disease, the brain shrinks and gaps develop.’
      • ‘There are hundreds, probably thousands, of chemical systems and transmitter substances throughout the brain.’
      • ‘Glutamate, incidentally, is the workhorse excitatory transmitter for neurons in the brain.’
      • ‘They block the lock and key mechanism for the nerve transmitter serotonin and are effective treatments for the nausea induced by cancer chemotherapy.’
      • ‘There was also evidence that acetylcholine was a transmitter in the brain.’
      • ‘In neurons, calcium entry through voltage-gated channels tightly couples an action potential with transmitter release.’
      • ‘It's use to make the nerve transmitter chemical called acetyl choline that many of our nerves and our brain and our muscles use to send messages.’
      • ‘Messages in the brain are transmitted from one nerve cell to another using different chemical transmitters.’
      • ‘In the absence of acetylcholinesterase, levels of the transmitter acetylcholine increase.’
      • ‘Acamprosate influences transmitters in the brain and reduces the craving for alcohol.’
      • ‘In the future, maybe status will be noted by the absence of these transmitters.’

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