base
I.base1 S1 W1 /beɪs/ BrE AmE verb
[Word Family: noun: ↑base, the basics, ↑basis; adjective: ↑baseless, ↑basic, ↑based; verb: ↑base; adverb: ↑basically]
[transitive usually passive] to have your main place of work, business etc in a particular place:
The paper had intended to base itself in London.
be based in something
The new organization will be based in Dallas. ⇨ ↑based
base something on/upon something phrasal verb
to use something as the thing from which something else is developed ⇨ basis:
Their relationship was based upon mutual respect.
an economy based on farming
II.base2 S2 W2 BrE AmE noun
[Word Family: noun: ↑base, the basics, ↑basis; adjective: ↑baseless, ↑basic, ↑based; verb: ↑base; adverb: ↑basically]
[Date: 1300-1400; Language: Old French; Origin: Latin basis; ⇨ ↑basis]
1. LOWEST PART [countable usually singular]
a) the lowest part or surface of something SYN bottom
base of
There is a door at the base of the tower.
the base of a triangle
a frozen dessert with a biscuit base
a wine glass with a heavy base
The leather of his left trainer was coming away from its rubber base.
b) the lowest point on a plant or part of your body, where it joins another part SYN bottom
base of
a hole in the base of the tree
He was killed by an axe blow to the base of his skull.
2. KNOWLEDGE/IDEAS [countable] the most important part of something, from which new ideas develop SYN foundation:
India has a good scientific research base.
base for
They were laying the base for a new economic recovery.
3. MILITARY [countable] a place where people in a military organization live and work
military/naval/air base
4. COMPANY/ORGANIZATION [uncountable and countable] the main place from which a person, company, or organization controls their activities
base for
He used the house as a base for his printing business.
5. PEOPLE/GROUPS [countable usually singular] the people, money, groups etc that form the main part of something:
The company has built up a loyal customer base.
By broadening the tax base (=all the people who pay taxes), he could raise more revenues.
an attempt to strengthen the city’s economic base (=things that produce jobs and money)
The country’s manufacturing base (=all the factories, companies etc that produce goods in a country) has shrunk by 20%. ⇨ ↑power base
6. SUBSTANCE/MIXTURE [singular, uncountable] the main part of a substance, meal etc to which other things are added:
paint with an oil base
base for
Vodka is the base for many cocktails.
7. SPORT [countable] one of the four places that a player must touch in order to get a point in games such as ↑baseball
8. be off base American English informal to be completely wrong:
His estimate for painting the kitchen seems way off base.
9. CHEMICAL [countable] technical a chemical substance that combines with an acid to form a ↑salt
10. NUMBERS [countable usually singular] technical the number in relation to which a number system or mathematical table is built up, for example 10 in the ↑decimal system
11. touch base (with somebody) to talk to someone to find out what is happening about something
—basal adjective
⇨ cover (all) the bases at ↑cover1(12)
• • •
COLLOCATIONS (for Meaning 2)
 adjectives
▪ a good base This data provided a good base for further research.
▪ a solid/firm/strong base A good education should give you a solid base for life.
▪ a sound/secure base A child needs a responsive mother in order to form a secure base for future development.
▪ a broad base The first year of the course aims to provide students with a broad base of knowledge.
▪ a knowledge base You’re building up a knowledge base that you’ll be able to use later.
verbs
▪ have a base Permanent staff have a better base from which to plan their career development.
▪ provide a base It is essential to provide a sound base from which economic progress can be made.
▪ build a base By concentrating on our core businesses we will build a strong base from which to exploit future opportunities.
▪ give somebody a base The training gives you a broad base in actually running an organization.
• • •
THESAURUS
▪ the bottom the lowest part of something: The house is at the bottom of that hill. | She scrolled down to the bottom of the screen.
▪ the underneath/the underside the bottom surface on the outside of something: You will find the serial number on the underneath of the vacuum cleaner.
▪ base the lowest part or the wide bottom part on which something stands: The lamp has a square base. | He had broken a bone at the base of his spine.
▪ the foot literary the bottom of a tree, a hill, or some stairs: There was a small village at the foot of the mountain.
▪ bed the ground at the bottom of a river, a lake, or the sea: the sea bed | They found some interesting stones on the river bed.
▪ the foundations the layer of cement and stones that forms the bottom of a building: The builders have begun laying the foundations for the house.
III.base3 BrE AmE adjective
[Date: 1300-1400; Language: Old French; Origin: bas, from Medieval Latin bassus 'short, low']
not having good moral principles:
base attitudes and desires
⇨ ↑base metal
basehu| ◎ | [beis] | | ※ | danh từ | | | ■ | đáy, chân đế | | | ☆ | the base of a pillar/column | | | chân trụ/cột | | | ■ | (toán học) đường đáy, mặt đáy | | | ☆ | the base of a triangle/pyramid | | | đáy tam giác/kim tự tháp | | | ■ | (toán học) con số làm cơ sở xây dựng một hệ thống số, thí dụ 10 trong hệ thống thập phân hoặc 2 trong hệ thống nhị phân | | | ■ | (trong bóng chày) một trong bốn vị trí mà người chơi phải chạm tới để ghi điểm; góc; gôn | | | ■ | căn cứ | | | ☆ | air/naval base | | | căn cứ không quân/hải quân | | | ☆ | military base | | | căn cứ quân sự | | | ☆ | base of operation | | | căn cứ tác chiến | | | ☆ | to set up/establish a base | | | thiết lập một căn cứ | | | ■ | (ngôn ngữ học) gốc từ | | | ■ | (hoá học) Bazơ | | | ■ | nền tảng, cơ sở | | | ☆ | she used her family's history as a base for her novel | | | bà ta dùng lịch sử gia đình mình làm nền cho cuốn tiểu thuyết của bà ta | | | ☆ | his arguments had a sound economic base | | | lý lẽ của ông ta có một cơ sở kinh tế vững chắc | | | ■ | phần hoặc thành phần chủ yếu cộng thêm các thứ khác | | | ☆ | a drink with a rum base | | | thức uống lấy rượu rum làm cốt | | | ☆ | some paints have an oil base | | | một số thuốc màu có thành phần chính là dầu | | | ☆ | put some moisturizer on as a base before applying your make-up | | | xoa một ít chất kem ướt làm nền trước khi đánh phấn | | | 〆 | to be off base | | | ✓ | (từ Mỹ,nghĩa Mỹ) sai lầm | | | 〆 | to catch somebody off base | | | ✓ | làm cho ai rơi vào tình huống bất ngờ | | | 〆 | to get to first base | | | ✓ | (từ Mỹ,nghĩa Mỹ), (thông tục) khởi công, bắt đầu làm (việc gì) | | ※ | ngoại động từ | | | ■ | dựa vào, căn cứ vào | | | ☆ | I base my hopes on the good news we had yesterday | | | hy vọng của tôi là dựa vào cái tin tốt lành chúng tôi nhận được hôm qua | | | ☆ | this novel is based on historical facts | | | tiểu thuyết này dựa vào những sự kiện lịch sử | | | ☆ | to base oneself on facts | | | dựa vào thực tế | | | ■ | bố trí | | | ☆ | where are you based now? | | | bây giờ anh được bố trí ở đâu? | | | ☆ | most of our staff are based in Cairo | | | hầu hết bộ tham mưu của chúng tôi được bố trí ở Cairô | | ※ | tính từ | | | ■ | hèn hạ, đê tiện; khúm núm, quỵ luỵ | | | ■ | không nguyên chất | | | ☆ | base coin | | | đồng tiền pha | | | ■ | kém giá trị, không quý | | | ☆ | base metal | | | kim loại thường |
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