radiation
gb/ɹˌeɪdiˈeɪʃən/ us/ɹˌeɪdiˈeɪʃən/
B1
英語
~ 4600
語義
0件の語義
名詞
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.
用法パターン：
[something] gives off radiation
よくある間違い：
Learners sometimes confuse 'radiation' with 'radio' or 'radiator', but they are unrelated concepts.
類義語
emission (A general term for something being sent out, not limited to energy.)
対義語
absorption (The process of taking in energy or particles rather than emitting them.)
コロケーション
radiation exposure
|radiation levels
|radiation therapy
|solar radiation
|ionizing radiation
テーマ
science
|environment
|health
|nature
例文
- 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.
学習者向け例文
- 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.
名詞
technical
B2
action
2
medical use of radiation to treat disease
A medical treatment that uses powerful radiation to kill cancer cells.
用法パターン：
receive radiation for [an illness]
よくある間違い：
Learners may confuse 'radiation' (treatment) with 'radiation' as harmful exposure; context is important.
類義語
radiotherapy (Technical medical term for this treatment.)
対義語
chemotherapy (A different type of cancer treatment using drugs instead of radiation.)
コロケーション
radiation therapy
|radiation treatment
|undergo radiation
テーマ
medicine
|health
|science
例文
- 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.
学習者向け例文
- He gets radiation to treat his cancer.
- My aunt had radiation after surgery.
- Radiation can help kill cancer cells.
名詞
B2
event
3
spreading outward from a central point
When something spreads out from the center in all directions.
類義語
dispersion (Focuses on scattering, not necessarily from a central point.)
対義語
concentration (Gathering together toward a central point.)
コロケーション
heat radiation
|wave radiation
テーマ
science
|space
例文
- 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.
学習者向け例文
- The sun makes heat radiation.
- The lines show the radiation from the middle point.
- Radiation happens when heat moves away from something hot.
文法
辞書形
radiation
IPA
GB/ɹˌeɪdiˈeɪʃən/
US/ɹˌeɪdiˈeɪʃən/
音節・強勢
ra - di - ation （3音節）
Stress on 3rd syllable (ation)
活用形
Noun
- Base: radiation
- Plural: radiation, radiations
関連語
Forms
radiations
noun
Core family
Negative and opposite forms
nonradioactive
adjective
Advanced or less common
irradiate
verb
irradiation
noun
radiotherapy
noun
表現
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.
例文
- 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.
例文
- 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.
例文
- Solar radiation is stronger at high altitudes.
- Plants use solar radiation to make food through photosynthesis.