radiation
gb/ɹˌeɪdiˈeɪʃən/ us/ɹˌeɪdiˈeɪʃən/
B1
Inglês
~ 4600
Acepções
0 acepção
Substantivo
B1
event
1
energy sent out as waves or particles
Energy that comes from a source as waves or tiny particles, often from the sun or dangerous materials.
Padrão de uso:
[something] gives off radiation
Erro comum:
Learners sometimes confuse 'radiation' with 'radio' or 'radiator', but they are unrelated concepts.
Sinônimos
emission (A general term for something being sent out, not limited to energy.)
Antônimos
absorption (The process of taking in energy or particles rather than emitting them.)
Colocações
radiation exposure
|radiation levels
|radiation therapy
|solar radiation
|ionizing radiation
Temas
science
|environment
|health
|nature
Exemplos
- The scientists measured the amount of radiation coming from the reactor.
- Too much exposure to UV radiation can damage your skin.
- The satellite collects data on solar radiation.
- Radiation from the radioactive waste is dangerous to humans.
- Lead shielding can block most types of harmful radiation.
Exemplos para estudantes
- The sun gives us light and radiation.
- Radiation from the sun can be strong in summer.
- Some machines use radiation to take pictures inside the body.
- Too much radiation is bad for health.
Substantivo
technical
B2
action
2
medical use of radiation to treat disease
A medical treatment that uses powerful radiation to kill cancer cells.
Padrão de uso:
receive radiation for [an illness]
Erro comum:
Learners may confuse 'radiation' (treatment) with 'radiation' as harmful exposure; context is important.
Sinônimos
radiotherapy (Technical medical term for this treatment.)
Antônimos
chemotherapy (A different type of cancer treatment using drugs instead of radiation.)
Colocações
radiation therapy
|radiation treatment
|undergo radiation
Temas
medicine
|health
|science
Exemplos
- She is undergoing radiation for breast cancer.
- Radiation is often combined with chemotherapy for better results.
- The patient completed six weeks of daily radiation treatments.
Exemplos para estudantes
- He gets radiation to treat his cancer.
- My aunt had radiation after surgery.
- Radiation can help kill cancer cells.
Substantivo
B2
event
3
spreading outward from a central point
When something spreads out from the center in all directions.
Sinônimos
dispersion (Focuses on scattering, not necessarily from a central point.)
Antônimos
concentration (Gathering together toward a central point.)
Colocações
heat radiation
|wave radiation
Temas
science
|space
Exemplos
- The design shows the radiation of lines from the center.
- Heat radiation occurs when warmth spreads out from a hot object.
- The explosion caused the radiation of shock waves in all directions.
Exemplos para estudantes
- The sun makes heat radiation.
- The lines show the radiation from the middle point.
- Radiation happens when heat moves away from something hot.
Gramática
Forma no dicionário
radiation
AFI
GB/ɹˌeɪdiˈeɪʃən/
US/ɹˌeɪdiˈeɪʃən/
Sílabas e tonicidade
ra - di - ation (3 sílabas)
Stress on 3rd syllable (ation)
Formas da palavra
Noun
- Base: radiation
- Plural: radiation, radiations
Família de palavras
Forms
radiations
noun
Core family
Negative and opposite forms
nonradioactive
adjective
Advanced or less common
irradiate
verb
irradiation
noun
radiotherapy
noun
Expressões
radiation sickness
1/ɹˌeɪdiˈeɪʃən sˈɪknəs/
fixed phrase
technical
illness from too much radiation exposure
A serious illness caused by too much exposure to dangerous radiation.
Exemplos
- Several workers developed radiation sickness after the accident.
- Radiation sickness can cause vomiting, hair loss, and even death.
radiation therapy
1/ɹˌeɪdiˈeɪʃən θˈɛɹəpi/
fixed phrase
technical
treatment using controlled radiation doses
A medical treatment that uses controlled amounts of radiation to kill cancer cells or other harmful cells.
Exemplos
- She is receiving radiation therapy for her lung cancer.
- Radiation therapy is often combined with surgery for better results.
solar radiation
1/sˈoʊlɚ ɹˌeɪdiˈeɪʃən/
fixed phrase
technical
energy coming from the sun
Energy from the sun that travels as light or other invisible waves.
Exemplos
- Solar radiation is stronger at high altitudes.
- Plants use solar radiation to make food through photosynthesis.