Meaning of “base” in the English Dictionary

"base" in British English

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basenoun

uk /beɪs/ us /beɪs/

base noun (BOTTOM)

B2 [ C ] the bottom part of an object, on which it rests, or the lowest part of something:

a crystal glass with a heavy base
At the base of the cliff was a rocky beach.
This cream provides an excellent base for your make-up (= a good bottom layer on which other layers can be put).

More examples

baseadjective

uk /beɪs/ us /beɪs/ literary

baseverb [ T usually + adv/prep ]

uk /beɪs/ us /beɪs/

B2 to have a particular town or area, etc. as the main place that you live and work in, or where you do business from:

Where is your firm based?
He was based in (= he lived in or was at a military establishment in) Birmingham during the war.

More examples

  • He was based in London during the war.
  • He's based in Paris during the week.
  • The company is based in Coventry.

Phrasal verb(s)

(Definition of “base” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"base" in American English

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base noun (BOTTOM)

us /beɪs/ [ C ] the bottom of an object; the part on which it rests:

This lamp has a heavy base so it won’t tip over.

geometry us /beɪs/ [ C ] A base angle is one of the two equal angles that include the bottom of an isosceles triangle.

base noun (MAIN PLACE)

us /beɪs/ [ C ] the place from which a business operates or a person works:

We have an office in San Diego, but Washington is still our base.

us /beɪs/ [ C ] A base is also a place from which the military operates that provides weapons storage and housing:

The military has bases all over the US.

base noun (SUBSTANCE)

biology /beɪs/ [ C ] one of four chemical substances that make up the part of DNA and RNA that controls the structure of genes

base noun (CHEMICAL)

chemistry /beɪs/ [ C/U ] any of various chemical substances that have the opposite effect or chemical behavior as that of an acid

base noun (NUMBER)

mathematics /beɪs/ [ C ] a number that is multiplied by itself:

In 6³, 6 is the base and it is multiplied by 6 three times.

base noun (MAIN PART)

us /beɪs/ [ C usually sing ] the main part of something, or the people or activities that form the main part of something:

The sauce has an olive oil base.
Tourism remains the city’s economic base.
He’ll need a wide base of regional support to win the election.

base noun (WORD PART)

grammar /beɪs/ [ C ] a word or word part to which prefixes and endings may be added to make new words, as in "do," the base of "redo" and "doable"

base noun (BASEBALL)

us /beɪs/ [ C ] (in the game of baseball) one of the four angles of a square, all of which a player must touch in order to score:

He reached first base on a single.

to establish a place as the place from which a business operates or a person works:

Where is your company based?

(Definition of “base” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"base" in Business English

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basenoun [ C ]

uk /beɪs/ us

the place where a company does its main business from:

The company, which has its base in California, plans to set up an office in Beijing.

all the resources or people that a company, etc. depends on in order to be successful:

a company's economic/industrial/research base
Manchester United's fans make up 17% of its shareholder base.

a positive feature of a situation that makes it possible for something else to grow and develop:

base (for sth) A cut to 10p per share would give a yield of 5.8% and a new base for dividend growth.

FINANCE an amount of money or a number that is used to compare other amounts of money or numbers to, especially as a way of measuring whether prices or numbers have increased or decreased:

The newspaper hopes to add several million dollars to its revenue base from the switchover.

baseverb [ T + adv/prep ]

uk /beɪs/ us

to have a particular country, city, etc. as the main place that you do business from:

They took the decision to base their headquarters in Germany.

Phrasal verb(s)

(Definition of “base” from the Cambridge Business English Dictionary © Cambridge University Press)