Definition of transmitter in English:



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

    • ‘The march of phone transmitter masts is proving unstoppable.’
    • ‘A wireless receiver unit receives the output signal transmitted by the transmitter.’
    • ‘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.’
    • ‘We attached satellite transmitters to turtles that had just finished nesting.’
    • ‘A radio transmitter is activated alerting rescue teams to their whereabouts.’
    • ‘Conversely, radio waves from a transmitter operating near the cable will enter the cable through these slots.’
    • ‘More than a dozen eavesdropping and jamming units, telephone exchanges, and radio and television transmitters were attacked.’
    • ‘These are transmitters that use radio waves to communicate with mobile phone handsets.’
    • ‘Using a 10 watt transmitter, it can be heard by 2,847 families.’
    • ‘On the other, we are anxious about the impact of a mobile phone transmitter mast in our neighbourhood.’
    • ‘I told you those FM radio transmitters were illegal in the UK!’
    • ‘The researchers used quartz crystals, like the wave transmitters in televisions and radios, which vibrate in an electrical field.’
    • ‘And devices using a car's power outlet and a cassette player or a small radio transmitter are available.’
    • ‘One of the patrolmen signaled frantically on a small portable transmitter for help.’
    • ‘With just a couple of electronic components that cost at most a dollar or two, you can build simple radio transmitters and receivers.’
    • ‘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.’
    • ‘The new solar powered FM transmitter will broadcast 24 hours a day with programmes predominantly in Pashto and Persian.’
    • ‘The battle was eventually won and the phone company agreed to erect a smaller transmitter in its place.’
    • ‘Other covert radio transmitters available from security equipment dealers have serious drawbacks.’
    listening device, hidden microphone, receiver, transmitter, wire, wiretap, phone tap, tap
    View synonyms
    1. 1.1A person or thing that transmits something.
      ‘reggae has established itself as the principal transmitter of the Jamaican language’
      • ‘The queen's principal role was as bearer and transmitter of royalty, of which she took possession on the death of her husband.’
      • ‘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.’
      • ‘Prisoners constitute a core transmitter group for HIV.’
      • ‘Chapter 3 discusses universities as producers and transmitters of economically useful knowledge, primarily technological knowledge.’
      • ‘Despite frequent inconsistencies and misapprehensions, the work was a principal transmitter of ancient science and Neoplatonic thought to the western Middle Ages.’
    2. 1.2
      ‘glutamate is one among many dozens of transmitters’
      • ‘Specifically, nicotine acts at the nicotinic receptor class for the transmitter acetylcholine.’
      • ‘Glutamate, incidentally, is the workhorse excitatory transmitter for neurons in the brain.’
      • ‘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.’
      • ‘The cells, nerves and transmitters in the brain are attacked during the course of the disease, the brain shrinks and gaps develop.’
      • ‘In neurons, calcium entry through voltage-gated channels tightly couples an action potential with transmitter release.’
      • ‘This results in rebound of the previously suppressed stimulatory transmitters (serotonin, norepinephrine and dopamine).’
      • ‘There are hundreds, probably thousands, of chemical systems and transmitter substances throughout the brain.’
      • ‘Messages in the brain are transmitted from one nerve cell to another using different chemical transmitters.’
      • ‘Other timely subjects included in this section are amino acid transmitters and neurodegenerative disorders.’
      • ‘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.’
      • ‘In the absence of acetylcholinesterase, levels of the transmitter acetylcholine increase.’
      • ‘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.’
      • ‘They block the lock and key mechanism for the nerve transmitter serotonin and are effective treatments for the nausea induced by cancer chemotherapy.’
      • ‘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.’
      • ‘There was also evidence that acetylcholine was a transmitter in the brain.’
      • ‘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.’
      • ‘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.’