catalyst
A catalyst is a substance that increases the speed of a chemical reaction without being consumed by the process. Figuratively, it refers to a person or event that causes an important change or action to happen.
例文
3 / 5The new community center was a catalyst for more social activities in the neighborhood.
The new community center was the reason more social events started happening in the neighborhood.
The enzyme acts as a biological catalyst, speeding up the breakdown of food.
The enzyme functions as a natural helper to make food digestion faster.
That one conversation with my teacher was the catalyst for my interest in science.
Talking to my teacher was the thing that started my love for science.
語族
覚え方のコツ
Think of a 'Cata-pult'. Just as a catapult launches an object into the air, a 'catalyst' launches a reaction or a change into motion.
クイックテスト
The introduction of the new software was a _____ for the team's increased productivity.
正解！
正解は： catalyst
例文
The new community center was a catalyst for more social activities in the neighborhood.
everydayThe new community center was the reason more social events started happening in the neighborhood.
The enzyme acts as a biological catalyst, speeding up the breakdown of food.
formalThe enzyme functions as a natural helper to make food digestion faster.
That one conversation with my teacher was the catalyst for my interest in science.
informalTalking to my teacher was the thing that started my love for science.
Research indicates that manganese dioxide serves as a catalyst in this laboratory experiment.
academicStudies show that manganese dioxide makes this specific science test happen faster.
The merger served as a catalyst for the company's expansion into international markets.
businessThe joining of the two companies caused the business to grow quickly into other countries.
語族
よく使う組み合わせ
よく使うフレーズ
catalyst for growth
something that makes a business or person improve quickly
primary catalyst
the main reason something started changing
social catalyst
a person or event that brings people together for a cause
よく混同される語
A catastrophe is a sudden disaster, whereas a catalyst is something that causes a change or reaction.
A category is a group or class of things, while a catalyst is an agent of change.
使い方のコツ
While 'catalyst' is a technical term in chemistry, it is very common in journalism and business to describe things that spark change. It is usually followed by the preposition 'for'.
よくある間違い
Learners often misspell the word as 'catalist'. Some also mistakenly use it to mean a 'result', but it actually describes the 'cause' that starts the process.
覚え方のコツ
Think of a 'Cata-pult'. Just as a catapult launches an object into the air, a 'catalyst' launches a reaction or a change into motion.
語源
Derived from the Greek word 'katalysis', meaning 'dissolution' or 'the act of loosening'.
文法パターン
文化的な背景
In historical and political contexts, certain events (like the Boston Tea Party) are often described by historians as catalysts for revolutions.
クイックテスト
The introduction of the new software was a _____ for the team's increased productivity.
正解！
正解は： catalyst
関連語彙
scienceの関連語
hypothesize
B2To suggest a possible explanation for something based on limited evidence, used as a starting point for further investigation.
velocity
A1Velocity describes how fast an object moves in a specific direction. It is a technical word for speed used often in science and math.
momentum
A1Momentum is the power that a moving object has to keep moving. It depends on how heavy the object is and how fast it is going. It is also used to describe a plan or project that is growing and becoming more successful.
magnetism
A1Magnetism is a physical force that pulls certain metals toward each other or pushes them away. It is also used to describe a special charm that attracts people to a person.
radiation
A1Radiation is energy that travels through space as waves or very small particles. It comes from natural sources like the sun and from machines like X-rays in hospitals.
wavelength
A1Wavelength is the distance between two peaks of a light or sound wave. It is also used to describe when people have the same ideas and understand each other.
optics
A1Optics is the branch of science that studies light and how it interacts with things like lenses and mirrors. In modern usage, it also refers to how an event or action is seen by the public.
thermodynamics
A1Thermodynamics is the study of heat and how it moves. It explains how energy changes from one form to another, such as how heat can turn into movement.
atom
A1An atom is the smallest possible part of a chemical element. Everything in the world is made of millions of these very tiny particles.
reaction
A1A reaction is a response to an action or a situation. In science, it is what happens when two or more substances are mixed together to create a change.
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