A1 noun محايد #2,706 الأكثر شيوعاً

直径

chokkei [tɕokːeː]

The 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.

أمثلة

3 من 5
1

このピザの直径は30センチです。

The diameter of this pizza is 30 centimeters.

2

太陽の直径は、地球の約109倍です。

The diameter of the sun is approximately 109 times that of the Earth.

3

ねえ、このボールの直径ってどれくらい?

Hey, what is the diameter of this ball?

عائلة الكلمة

اسم
直径
مرتبط
半径
💡

نصيحة للحفظ

The first kanji 直 (choku) means 'straight.' Think of a 'straight' line passing directly through the middle of a circle.

اختبار سريع

円の___は、半径の2倍の長さです。

صحيح!

الإجابة الصحيحة هي: 直径

أمثلة

1

このピザの直径は30センチです。

everyday

The diameter of this pizza is 30 centimeters.

2

太陽の直径は、地球の約109倍です。

formal

The diameter of the sun is approximately 109 times that of the Earth.

3

ねえ、このボールの直径ってどれくらい?

informal

Hey, what is the diameter of this ball?

4

円の面積を計算するには、直径ではなく半径が必要です。

academic

To calculate the area of a circle, you need the radius, not the diameter.

5

このパイプの直径は、規格に合わせて50ミリにしてください。

business

Please ensure the diameter of this pipe is 50mm according to the standards.

عائلة الكلمة

اسم
直径
مرتبط
半径

تلازمات شائعة

直径を測る to measure the diameter
直径5センチ 5cm in diameter
直径が大きい to have a large diameter
最大直径 maximum diameter
直径を計算する to calculate the diameter

العبارات الشائعة

直径に等しい

equal to the diameter

内径と外径

inner diameter and outer diameter

直径の長さ

the length of the diameter

يُخلط عادةً مع

直径 vs 半径

Hankei (radius) is half the distance of the diameter (chokkei).

直径 vs 円周

Enshū (circumference) is the distance around the circle, not across it.

📝

ملاحظات الاستخدام

While commonly used in math, it is also frequently used when buying household items like frying pans, pots, or lightbulbs.

⚠️

أخطاء شائعة

Learners often confuse 'chokkei' (diameter) with 'hankei' (radius). Also, avoid using 'nagasa' (length) alone when the specific dimension needed is the diameter of a circle.

💡

نصيحة للحفظ

The first kanji 直 (choku) means 'straight.' Think of a 'straight' line passing directly through the middle of a circle.

📖

أصل الكلمة

From the kanji 直 (direct/straight) and 径 (path/diameter). It literally means the 'straight path' through a circle.

أنماط نحوية

Used as a standalone noun. Often follows the pattern [Noun] + の + 直径. Can be followed directly by measurements (e.g., 直径10cm).
🌍

السياق الثقافي

In Japan, many household goods are categorized by diameter using the unit 'cm' or 'mm', which is essential for home shopping.

اختبار سريع

円の___は、半径の2倍の長さです。

صحيح!

الإجابة الصحيحة هي: 直径

كلمات ذات صلة

協力

A1

Cooperation or collaboration where two or more people combine their efforts to achieve a common goal. It is used in both personal and professional settings to describe working together as a team or providing assistance.

提案

A1

A suggestion or proposal of a plan or idea for others to consider. It is used in both casual conversations and professional meetings to introduce a potential course of action.

輸出

A1

The act of sending goods or services produced in one country to another country for sale or trade. In Japanese, it functions as a noun and a suru-verb, representing the 'exit' of products from a domestic market.

輸入

A1

The act of bringing goods, services, or materials into a country from abroad for sale or use. In Japanese, it functions as a noun or can be combined with 'suru' to become a verb meaning 'to import'.

資源

A1

Shigen refers to valuable materials or assets, such as natural minerals, energy sources, or human talent, that can be used for production or survival. It is widely used in economics, environmental science, and daily life to describe both raw materials and abstract wealth.

保護

A1

The act of keeping someone or something safe from harm, damage, or loss by providing care or creating boundaries. It is a versatile term in Japanese used for social welfare, environmental conservation, and digital security.

観察

A1

Observation is the act of watching someone or something carefully in order to gain information or understand a process. It is frequently used in scientific studies, nature analysis, and describing the act of paying close attention to details.

競争

A1

Kyousou refers to the act of competing or vying with others to achieve a goal, win a prize, or establish superiority. It is a versatile term used in sports, business, and academics to describe both structured contests and general rivalry.

拡大

A1

The act of making something larger in size, scale, or scope. It is frequently used for physical enlargement (like a photo) or abstract growth (like a business or a problem).

製造

A1

The process of making or producing goods, typically on a large scale using machinery. It refers specifically to industrial manufacturing rather than making things by hand on a small scale.

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