domain
A domain is an area of knowledge or a piece of land that someone controls.
Explanation at your level:
A domain is a place or a topic. You can have a domain on the internet. It is like an address for a website. It is also a place where you are the boss.
A domain is a specific area. It can be a field of study like math or science. It can also be a website name like google.com. People use it to talk about their work.
In professional life, a domain is your area of expertise. If you are a doctor, medicine is your domain. In technology, it refers to the web address used to find a site online.
The term is versatile. You might hear 'public domain' regarding copyright laws, meaning anyone can use the material. It implies a sense of boundary or jurisdiction, whether physical or intellectual.
Beyond simple definitions, 'domain' suggests a sphere of influence. In academic discourse, researchers define their domain to limit the scope of their study. It carries a nuance of authority and control over a specific segment of reality.
Etymologically rooted in 'dominium', the word carries a weight of sovereignty. Whether discussing the 'domain of the mind' or the 'domain of a monarch', it signifies a space where rules are defined by the master. It is essential for precision in legal, technical, and philosophical writing.
30秒でわかる単語
- A domain is an area of control.
- It refers to knowledge fields.
- It is used for website addresses.
- It implies a boundary.
Think of the word domain as a way to define boundaries. Whether you are talking about a scientist's field of study or a king's territory, you are describing a domain.
In our digital world, we use this word constantly for website addresses. When you type in a URL, you are entering a specific digital domain. It is all about ownership, expertise, and location.
The word domain comes from the Old French word demaine, which originally meant 'lordship' or 'possession'. It traces back to the Latin word dominium, related to dominus, meaning 'master' or 'owner'.
Historically, it referred to the land held by a lord. Over centuries, the meaning expanded from physical land to abstract concepts like knowledge, where a person is the 'master' of their subject.
You will often hear this in professional settings. We talk about public domain for things that belong to everyone, or domain expertise when someone is a real pro at their job.
It is a fairly formal word. While you might say 'my room is my territory,' you would say 'this is my area of domain' in a meeting to sound more professional.
1. Public domain: Available for anyone to use freely. 2. Within one's domain: Inside the area of one's responsibility. 3. Master of one's domain: Being in total control of your life or work. 4. Domain name: The address of a website. 5. Outside my domain: Not my job or area of knowledge.
The word is a standard countable noun. You can have one domain or many domains. The stress is on the second syllable: doh-MAIN.
It rhymes with 'remain', 'explain', and 'terrain'. It is often used with the preposition 'of' (e.g., 'a domain of knowledge').
Fun Fact
Related to 'domino' and 'dormitory'
Pronunciation Guide
doh-MAIN
doh-MAIN
Common Errors
- stressing first syllable
- mispronouncing 'ai'
Rhymes With
Difficulty Rating
easy
easy
easy
easy
What to Learn Next
Prerequisites
Learn Next
上級
Grammar to Know
Noun usage
The domain is large.
Examples by Level
This is my domain.
This is my area.
Possessive pronoun usage.
The website has a new domain.
Math is not my domain.
He owns the land in his domain.
The domain is very large.
She is an expert in her domain.
This is a private domain.
The domain name is easy to remember.
They work in the same domain.
Public domain works are free.
His domain of expertise is biology.
The company bought a new domain.
This issue is outside my domain.
She controls her own domain.
The internet domain is registered.
They expanded their domain.
He is a master of his domain.
The software operates within a specific domain.
Historical documents are now in the public domain.
He has a deep understanding of his domain.
The king defended his domain.
We need to secure the domain name.
This falls under the domain of the government.
She is respected in her professional domain.
The domain of the study is limited.
The theory applies to a wide domain of physics.
The author's work entered the public domain.
He is a specialist in the domain of linguistics.
The domain of the problem is quite complex.
They are expanding their domain of influence.
The domain name system is crucial.
This is beyond the domain of human knowledge.
The research covers a specific domain.
The domain of the monarch was vast.
His intellectual domain is vast and deep.
The domain of the function is defined.
It is a matter within the domain of ethics.
The domain name was auctioned for millions.
She navigated her domain with ease.
The concept exists in the domain of theory.
They redefined the domain of the project.
よく使う組み合わせ
Idioms & Expressions
"public domain"
not protected by copyright
The song is in the public domain.
neutralEasily Confused
similar spelling
dome is a roof
The dome is round.
Sentence Patterns
The domain of X is Y
The domain of this study is biology.
語族
Nouns
Verbs
Adjectives
関連
How to Use It
8/10
Formality Scale
よくある間違い
Domain implies control or expertise
Tips
When to use
Use it for expertise or websites.
Memorize It
Mnemonic
Do-main: I do main things in my area.
Visual Association
A king on a throne.
Word Web
チャレンジ
Define your domain of expertise.
語源
Latin
Original meaning: possession
文化的な背景
None
Commonly used in tech and legal contexts
Practice in Real Life
Real-World Contexts
Internet
- register a domain
Conversation Starters
"What is your domain of expertise?"
Journal Prompts
Describe your personal domain.
よくある質問
1 問The address of a website.
自分をテスト
This is my ___.
Domain fits the context of ownership.
スコア： /1
Summary
A domain is a space you own or know well.
- A domain is an area of control.
- It refers to knowledge fields.
- It is used for website addresses.
- It implies a boundary.
When to use
Use it for expertise or websites.
例文
Choosing the right domain name is essential for building a recognizable brand online.
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