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English Words Starting With R

5,802 entries — pick a word to see its definition, pronunciation, and usage.

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

resnais
nounB1
/ˈreɪz(ə)n/A dried grape, used especially in baking.
resnatron
nounExtremely Low (Obsolete Technical)
/ˈrɛznətrɒn/A high-power, high-frequency vacuum tube oscillator, historically used in early radar transmitters.
resnik
nounVery Low
/ˈrɛznɪk/A proper noun, typically used as a surname of Slavic origin, sometimes appearing in specialized contexts.
resocialization
nounC1/C2
/ˌriːˌsəʊʃəlaɪˈzeɪʃən/The process by which an individual is socialized again, often learning new norms, values, and behaviors to function in a new social context or after a significant life change.
resoil
verb-transitiveLow
/ˌriːˈsɔɪl/To make something dirty or soiled again; to cause to become unclean once more.
resojet engine
nounVery Low (Specialist Technical)
/ˈrɛz.əʊ.dʒɛt ˈɛn.dʒɪn/A type of pulse jet engine that uses a resonant chamber to produce thrust via intermittent combustion pulses.
resole
verb-transitiveModerate
/riːˈsəʊl/To attach a new sole to a shoe or similar footwear.
resolution
nounB2
/ˌrez.əˈluː.ʃən/A firm decision to do or not to do something.
resolutioner
nounVery Rare / Archaic
/ˌrɛzəˈluːʃənə/A person who makes or supports a formal proposal or decision, especially at an assembly or meeting.
resolve
nounverbverb-intransitive+1B2
/rɪˈzɒlv/To make a firm decision to do something; to find a solution to a problem.
resolvent
adjectivenounC2
/rɪˈzɒlvənt/Something that resolves or settles a difficulty.
resolving power
nounC1
/rɪˈzɒlvɪŋ ˈpaʊə/The ability of an optical instrument, such as a microscope or telescope, to distinguish two separate points as distinct.
resonance
nounC1
/ˈrɛz.ə.nəns/The reinforcement or prolongation of sound by reflection or synchronous vibration.
resonance radiation
nounC2 (Very Low Frequency)
/ˈrɛzənəns ˌreɪdɪˈeɪʃ(ə)n/Electromagnetic radiation emitted by an atom, molecule, or nucleus when it transitions from an excited state to a lower energy state at a specific resonant frequency; often associated with the re-emission of absorbed radiation at the same wavelength.
resonant
adjectivenounC1
/ˈrɛz(ə)nənt/Producing a deep, clear, and prolonged sound; having the ability to vibrate sympathetically with a sound source.
resonant cavity
nounC2+ / Rare / Technical
/ˈrɛz(ə)nənt ˈkævɪti/A hollow chamber or enclosure designed to resonate or amplify sound waves or electromagnetic waves at specific frequencies.
resonant-jet engine
nounVery Rare / Highly Technical
/ˈrɛzənənt ˌdʒɛt ˈɛnʤɪn/A type of jet engine (like a pulsejet) that operates by creating pressure waves that resonate in a specially shaped combustion chamber, producing intermittent thrust.
resonate
verbverb-intransitiveverb-transitiveC1
/ˈrɛzəneɪt/To produce or be filled with a deep, full, reverberating sound.
resonator
nounC1
/ˈrez.ə.neɪ.tə/A device or system that enhances or sustains sound, vibration, or oscillation by resonance.
resorb
verbverb-transitiveLow (C2)
/rɪˈzɔːb/To absorb again, as in the body absorbing substances or tissues that were previously part of it.

Showing 2901–2920 of 5802 words.