Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “base”

base

noun uk   /beɪs/ us  

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).

base noun (MAIN PLACE)

B2 [C] the main place where a person lives and works, or a place that a company does business from: I spend a lot of time in Brussels, but London is still my base. Nice is an excellent base for (= place to stay when) exploring the French Riviera.

base noun (MILITARY)

a place where there are military buildings and weapons and where members of the armed forces live: an old naval/military base

base noun (IN BASEBALL)

[C] one of the four positions on a square that a player must reach to score a point in the game of baseball

base noun (NECESSARY PART)

[C] the activity or people from which someone or something gets most of their support, money, etc.: A strong economy depends on a healthy manufacturing base. We're aiming to expand our customer base.

base noun (MAIN PART)

C2 [C usually singular] the main part of something: a cocktail with a whisky base

base noun (IN MATHEMATICS)

[C usually singular] specialized mathematics the number on which a counting system is built: A binary number is a number written in base 2, using the two numbers 0 and 1.

base noun (IN CHEMISTRY)

[C] specialized chemistry a chemical that dissolves in water and combines with an acid to create a salt

base

adjective uk   /beɪs/ literary us  
not showing any honour and having no morals: I accused him of having base motives.
basely
adverb uk   /ˈbeɪs.li/ us  
baseness
noun [U] uk   /ˈbeɪs.nəs/ us  

base

verb [T usually + adv/prep] uk   /beɪs/ us  
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.
Phrasal verbs
(Definition of base from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of base?
Add Cambridge dictionaries to your browser to your website

Definitions of “base” in other dictionaries

Word of the Day

light at the end of the tunnel

signs of improvement in a situation that has been bad for a long time, or signs that a long and difficult piece of work is almost finished

Word of the Day

The language of work

by Kate Woodford,
October 15, 2014
Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More