English Words Starting With R

• radicalism

  nounC1
  /ˈræd.ɪ.kəl.ɪ.zəm/The beliefs or actions of people who advocate thorough or complete political or social reform.
• radicality

  nounLow (C1+ academic/technical)
  /ˌradɪˈkalɪti/The quality or state of being radical; fundamental or extreme nature.
• radicalization

  nounC1/C2
  /ˌradɪk(ə)lʌɪˈzeɪʃ(ə)n/The process by which an individual or group comes to adopt increasingly extreme political, social, or religious ideals and aspirations, often rejecting or undermining the status quo or ideas of compromise.
• radicalize

  verbverb-intransitiveverb-transitiveC1-C2
  /ˈræd.ɪ.kə.laɪz/To cause someone to adopt extreme political or social views, often advocating for fundamental or revolutionary change.
• radicand

  nounvery low
  /ˈrædɪkænd/In mathematics, the number or expression under a radical sign (such as a square root).
• radicchio

  nounLow
  /ræˈdɪk.i.əʊ/A variety of chicory (Cichorium intybus) with dark reddish-purple leaves and white veins, typically eaten raw in salads or cooked.
• radicel

  nounVery low
  /ˈradɪs(ə)l/A small root; a rootlet.
• radices

  nounC2
  /ˈreɪdɪsiːz/The plural form of 'radix'; meaning the bases, roots, or origins of something.
• radicle

  nounC2
  /ˈradɪk(ə)l/the primary root that emerges from a germinating seed; the initial, fundamental part of a root system; a small, root-like structure in biology or botany.
• radiculitis

  nounC1
  /rəˌdɪkjʊˈlaɪtɪs/Inflammation of a nerve root.
• radiguet

  nounVery Low
  /ˌradiˈɡeɪ/A French surname, most famously that of the French novelist and poet Raymond Radiguet (1903-1923).
• radii

  nounC1
  /ˈreɪ.di.aɪ/The plural form of 'radius', meaning straight lines from the centre to the circumference of a circle or sphere.
• radin

  nounLow-frequency in global English; higher frequency in specific regions (e.g., Canada, parts of the UK).
  /ˈɹædɪn/Excessively unwilling to spend money; stingy, miserly.
• radio

  adjectivecombining-formnounverb-intransitiveverb-transitiveA1
  /ˈreɪ.di.əʊ/The technology using electromagnetic waves to transmit signals carrying sound or information.
• radio astronomy

  nounC2
  /ˈreɪdiəʊ əˈstrɒnəmi/The branch of astronomy that studies celestial objects by observing their radio wave emissions.
• radio beacon

  nounB2
  /ˈreɪdiəʊ ˈbiːkən/A fixed radio transmitter that emits a distinctive signal for navigation or location purposes.
• radio car

  nounMedium-Low
  /ˈreɪ.di.əʊ ˌkɑː/A vehicle equipped with radio communication equipment, typically used by emergency services, journalists, or taxis.
• radio collar

  nounC1
  /ˈreɪdiəʊ ˌkɒlə/A device fitted around an animal's neck that emits radio signals, allowing researchers to track its location and movements.
• radio compass

  nounLow
  /ˈreɪ.di.əʊ ˈkʌm.pəs/An aircraft or marine navigational instrument that indicates the direction to a radio transmitter, historically used for homing and direction finding.
• radio control

  nounB1-B2
  /ˈreɪdiəʊ kənˌtrəʊl/A method of operating a device, especially a model vehicle or aircraft, without physical contact, using radio signals.

Showing 221–240 of 5802 words.