reactor
gb/ɹiˈæktɚ/ us/ɹiˈæktɚ/
B2
英語
~ 5600
語義
0件の語義
名詞
technical
B2
entity
1
machine for controlled nuclear reactions
A large machine where nuclear reactions are controlled to make heat or power, often used in power stations.
用法パターン：
a/an [adjective] reactor
よくある間違い：
Learners sometimes confuse "reactor" with "reactor plant" or "power plant". A reactor is the machine where the nuclear reaction happens, while the power plant is the whole facility, including the reactor, cooling systems, buildings, and other equipment.
類義語
nuclear reactor (More explicit; specifically names that the reactor uses nuclear energy.)
対義語
solar panel (Uses sunlight to produce power instead of nuclear reactions; not a direct opposite but a contrasting type of power source.)
コロケーション
nuclear reactor
|reactor core
|reactor vessel
|reactor safety
|reactor shutdown
|reactor design
テーマ
science
|technology
|energy
|environment
例文
- The power plant shut down its oldest reactor after safety concerns were raised.
- Engineers are working on a new type of reactor that produces less radioactive waste.
- After the earthquake, the reactor automatically switched to its emergency cooling system.
- The university operates a small research reactor for training and experiments.
学習者向け例文
- The city gets electricity from a nuclear reactor.
- The reactor was turned off for safety checks.
- Scientists tested new fuel in the reactor.
- The reactor core must stay cool at all times.
名詞
technical
C1
entity
2
vessel for controlled chemical reactions
A closed container or system where chemicals are mixed and controlled so they react in a planned way, especially in factories or labs.
用法パターン：
a/an [adjective] reactor
よくある間違い：
Learners may confuse "reactor" with "reactant". A "reactor" is the container or system, while a "reactant" is a substance that takes part in a chemical reaction.
類義語
reaction vessel (Common technical term; stresses the container aspect more than the engineered system as a whole.)
対義語
storage tank (Holds chemicals without promoting reaction, whereas a reactor is designed for reactions to occur.)
コロケーション
chemical reactor
|batch reactor
|continuous reactor
|reactor design
|reactor volume
|reactor temperature
テーマ
science
|industry
|technology
例文
- The mixture was pumped into the reactor and heated to 200°C.
- A fault in the reactor caused the reaction to run out of control.
- They scaled up the laboratory process to a pilot-scale reactor.
- Stirring speed inside the reactor can affect the product quality.
学習者向け例文
- The chemicals react inside the reactor.
- The factory uses a big reactor to make the product.
- We keep the reactor at a high temperature.
- The engineer cleaned the reactor before starting the process.
名詞
informal
B2
entity
3
person who records reactions to content
A person who makes and shares videos showing how they react to other videos, music, or games.
用法パターン：
a/an [adjective] reactor
よくある間違い：
Learners sometimes think "reactor" in this sense means any person who simply reacts in real life. In everyday conversation, people usually say someone "reacts" or is a "reviewer" or "commentator"; "reactor" for a person is mainly used for online creators who make reaction videos.
類義語
content creator (Broader; includes many types of creators, not only those who focus on reaction videos.)
対義語
bystander (A person who only watches and does not actively comment, react publicly, or create content.)
コロケーション
YouTube reactor
|reaction video reactor
|popular reactor
|music reactor
|first-time reactor
|gaming reactor
テーマ
media
|internet
|entertainment
|communication
|arts_entertainment
例文
- The reactor paused the clip to give his honest opinion.
- She became a well-known reactor by posting daily reaction videos to new music releases.
- Many reactors include the original video in a small window on the screen.
- The channel invites reactors from different countries to respond to the same movie trailer.
学習者向け例文
- The reactor watches funny videos and talks about them.
- He works as a reactor on YouTube.
- The reactor laughs a lot in his videos.
- Many people follow this reactor on social media.
文法
辞書形
reactor
IPA
GB/ɹiˈæktɚ/
US/ɹiˈæktɚ/
音節・強勢
re - act - or （3音節）
Stress on 2nd syllable (act)
活用形
Noun
- Base: reactor
- Plural: reactors
関連語
表現
breeder reactor
1/bɹˈidɚ ɹiˈæktɚ/
fixed phrase
technical
reactor that creates new fuel
A special nuclear reactor that makes more usable nuclear fuel than it uses up.
例文
- A breeder reactor can extend the life of uranium resources.
- The government canceled plans for a new breeder reactor due to cost and safety concerns.
fast reactor
1/fˈæst ɹiˈæktɚ/
fixed phrase
technical
reactor using fast neutrons
A type of nuclear reactor that works with fast neutrons, without slowing them down in a moderator.
例文
- Engineers are studying how to improve the safety of fast reactors.
- The fast reactor design allows better use of nuclear fuel.
nuclear reactor
1/nˈukliɚ ɹiˈæktɚ/
fixed phrase
technical
machine for nuclear fission power
A large machine where nuclear fuel is used in a controlled way to make heat or power.
例文
- The country plans to build a new nuclear reactor by 2035.
- Several nuclear reactors were taken offline for maintenance after the storm.
power reactor
1/pˈaʊɚ ɹiˈæktɚ/
fixed phrase
technical
reactor for making electricity
A nuclear reactor whose main job is to make heat that is turned into electricity for homes and industry.
例文
- Most power reactors in the country are located near the coast.
- The new power reactor will supply energy to several million people.
reactor core
1/ɹiˈæktɚ kˈɔɹ/
fixed phrase
technical
central part of a reactor
The middle part of a reactor, where the main nuclear or chemical reaction takes place.
例文
- Water circulates through the reactor core to remove heat.
- Damage to the reactor core can lead to a serious accident.
reactor shutdown
1/ɹiˈæktɚ ʃˈʌtdˌaʊn/
fixed phrase
technical
stopping a reactor’s operation
The process of stopping the reaction in a reactor so that it no longer produces power.
例文
- An automatic reactor shutdown was triggered by the safety system.
- The plant scheduled a reactor shutdown for regular inspections.
reactor vessel
1/ɹiˈæktɚ vˈɛsəl/
fixed phrase
technical
main container of a reactor
The strong container that holds the core and the cooling system inside a reactor.
例文
- Inspectors found small cracks in the reactor vessel.
- The reactor vessel is designed to withstand extremely high pressure.
research reactor
1/ɹisˈɚt͡ʃ ɹiˈæktɚ/
fixed phrase
technical
small reactor for research
A smaller nuclear reactor used for science, training, and making special materials, not mainly for making electricity.
例文
- The university operates a research reactor for teaching nuclear engineering students.
- Radioactive isotopes for medicine are often produced in research reactors.
fusion reactor
1/fjˈuʒən ɹiˈæktɚ/
fixed phrase
technical
machine that uses nuclear fusion
A machine that tries to use nuclear fusion to make energy in a controlled way.
例文
- Scientists hope that a working fusion reactor will provide almost limitless clean energy.
- The new fusion reactor aims to produce more energy than it uses.
- The international project is building the world's largest fusion reactor in France.
- Building a safe, reliable fusion reactor is a major engineering challenge.