分子
In a scientific context, it refers to a 'molecule,' the smallest unit of a chemical compound. In mathematics, it refers to the 'numerator,' the top number in a fraction.
Exemples
3 sur 5水は水素と酸素の分子からできています。
Water is made of hydrogen and oxygen molecules.
不純な分子の混入を防ぐ必要があります。
It is necessary to prevent the inclusion of impure elements.
あのグループには変な分子が混じっているね。
There are some weird elements (people) mixed into that group, aren't there?
Famille de mots
Astuce mémo
The kanji consist of 'divide' (分) and 'child' (子). Think of the 'child' as the small piece of a molecule, or the child sitting on the mother's (分母) shoulders in a fraction.
Quiz rapide
分数では、上に（ ）があり、下に分母があります。
Correct !
La bonne réponse est : 分子
Exemples
水は水素と酸素の分子からできています。
everydayWater is made of hydrogen and oxygen molecules.
不純な分子の混入を防ぐ必要があります。
formalIt is necessary to prevent the inclusion of impure elements.
あのグループには変な分子が混じっているね。
informalThere are some weird elements (people) mixed into that group, aren't there?
この論文は分子生物学の最新の研究に基づいています。
academicThis paper is based on the latest research in molecular biology.
組織内の反対分子を説得しなければなりません。
businessWe must persuade the opposing elements within the organization.
Famille de mots
Collocations courantes
Phrases Courantes
不純分子
impure element (an outsider or troublemaker)
過激分子
radical elements/extremists
分子量
molecular weight
Souvent confondu avec
Bunshi is the top number of a fraction, while Bunbo is the bottom number.
Genshi is a single atom; Bunshi is a group of atoms bonded together.
Notes d'usage
Use this word primarily in science or math. When used to describe people, it often has a slightly negative or clinical nuance, suggesting they are a 'component' of a larger group.
Erreurs courantes
Students often swap 'bunshi' (numerator) and 'bunbo' (denominator) when talking about math. Remember that the 'child' (shi) sits on top of the 'mother' (bo).
Astuce mémo
The kanji consist of 'divide' (分) and 'child' (子). Think of the 'child' as the small piece of a molecule, or the child sitting on the mother's (分母) shoulders in a fraction.
Origine du mot
A compound of 'bun' (to divide/part) and 'shi' (child/small object), originating as a translation for Western scientific and mathematical terms in the Meiji era.
Modèles grammaticaux
Quiz rapide
分数では、上に（ ）があり、下に分母があります。
Correct !
La bonne réponse est : 分子
Vocabulaire associé
Mots lis
対角
A1Refers to a diagonal relationship or position, specifically relating to opposite corners or angles in a geometric shape or a physical space. It is commonly used in mathematics to describe lines connecting non-adjacent vertices, as well as in daily life to describe sitting or standing diagonally across from someone.
半径
A1The distance from the center of a circle to its outer edge. It is half of the diameter and is used in both mathematical contexts and to describe a physical area around a specific point.
直径
A1The distance from one side of a circle to the other, passing through the center point. It is a fundamental measurement used in geometry and daily life to describe the size of round objects like plates or pipes.
面積
A1面積 refers to the measurement of the size of a surface or the amount of space inside a two-dimensional shape. It is commonly used in mathematics, real estate, and geography to describe how much space a flat object or land occupies.
容積
A1The internal volume or capacity of a container or three-dimensional space. It refers to how much a container can hold, often used in architectural, shipping, or scientific contexts.
重量
A1The measurement of how heavy an object is, typically expressed in standard units like kilograms or pounds. It is frequently used in technical, industrial, or official contexts such as shipping and manufacturing.
密度
A1Density refers to the degree to which something is compact or crowded. It can describe physical mass per volume, the concentration of people in an area, or the richness and intensity of time and content.
濃度
A1The degree to which a substance is contained within a solution or mixture, or the depth of color and thickness of a liquid. It is commonly used in scientific, culinary, and environmental contexts to describe how strong or weak a solution is.
硬度
A1Hardness refers to the degree or level of how hard a material is, often measured scientifically. It is commonly used to describe the physical properties of minerals, metals, or the mineral content in water (water hardness).
温度
A1Temperature refers to the physical measurement of how hot or cold an object, liquid, or environment is. It is measured in degrees and is a fundamental concept used in daily life, science, and weather.
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