reactor - Master This Word
Master this word with our 5-step learning method – Learn English in English
reactor Word Meanings
- a device or vessel for initiating a chemical reaction
- a system for generating nuclear energy
- an entity that responds to a stimulus
reactor Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
reactor Phonetic & Pronunciation
UK
/rɪˈaktə/
US
/riˈæktər/
reactor Word Etymology
The word 'reactor' is derived from 'react' (re- = back + act = to do), denoting a device that acts upon a chemical reaction. It originated from Latin 'reagere' through Old French 'reacter' before entering English. Imagine a boiling pot that bubbles and reacts to the introduction of ingredients, symbolizing transformation and energy creation.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
A reactor is a device or vessel for initiating and controlling a chemical reaction, a system that generates nuclear energy, or an entity that responds to a stimulus. In chemistry, a reactor provides a controlled environment where reactants are mixed, heated, and stirred to drive a reaction toward products. In nuclear power, a reactor is the facility or apparatus where fission heat is produced to generate steam and electricity. In a broader sense, a reactor can also mean something that responds to a trigger or input. The term comes from the idea of acting back or responding, linking transformation in chemistry, energy production, and responsive systems.
Usage Reminders
- - A reactor refers to a device, vessel, or system in different contexts.
- - In chemistry, it gives controlled conditions for a reaction.
- - In nuclear energy, it generates heat to make electricity.
- - Do not use reactor to mean a person who reacts emotionally.
- - Common collocations: chemical reactor, nuclear reactor, reactor vessel.
Common Misconceptions
- A reactor is always a person who reacts to something.
- Reactor and reactor vessel are the same as an engine.
- All reactors are nuclear machines.
- In chemistry, a reactor is just a beaker or simple container.
- Reactor can replace the verb 'react' in ordinary sentences.
Thinking Differences
English treats reactor as a broad term for devices, systems, or a respondent; learners often assume it only means nuclear plants or confuse with 'react' as a verb.
Learning Tips
- Learn the three main senses first: chemical device, nuclear system, and a thing that responds.
- Pair with adjectives: chemical reactor, nuclear reactor, reactor core.
- Practice distinguishing contexts in reading and listening.
- Do not confuse with the verb 'react' in sentences.
- Memorize common collocations and core vocabulary around reactors.
- Check diagrams or captions to see if reactor refers to a vessel or a plant.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the meaning of the word 'reactor'?
A.A type of bird
B.A tool used for gardening
C.A musical instrument
D.A device that initiates and controls a chemical reaction
Step 2: Usage
In which of the following sentences is the word 'reactor' used correctly?
A.She played the reactor beautifully at the concert.
B.The nuclear reactor malfunctioned due to a technical error.
C.I watered the reactor every morning in my garden.
D.He spotted a reactor flying in the sky.
Step 3: Similar Words
Which of the following is a synonym for 'reactor'?
A.Catalyst
B.Quiet
C.Resist
D.Erase
Step 4: Opposite Words
What is the opposite of 'reactor'?
A.Dormant
B.Active
C.Inert
D.Static
Step 5: Mastery
In what real-life context would you find a 'reactor'?
A.Library
B.Supermarket
C.Power plant
D.Movie theater
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