|Origin:||Latin basis; BASIS|
lowest part[countable usually singular]
the lowest part or surface of something [= bottom]
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.
the lowest point on a plant or part of your body, where it joins another part [= bottom]
a hole in the base of the tree
He was killed by an axe blow to the base of his skull.
the most important part of something, from which new ideas develop [= foundation]:
India has a good scientific research base.
They were laying the base for a new economic recovery.
a place where people in a military organization live and work
the main place from which a person, company, or organization controls their activities
company/organization[uncountable and countable]
He used the house as a base for his printing business.
the people, money, groups etc that form the main part of something: ➔ power base
people/groups[countable usually singular]
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%.
the main part of a substance, meal etc to which other things are added:
paint with an oil base
Vodka is the base for many cocktails.
one of the four places that a player must touch in order to get a point in games such as baseball
8 American English informal
to be completely wrong:
His estimate for painting the kitchen seems way off base.
a chemical substance that combines with an acid to form a salt
the number in relation to which a number system or mathematical table is built up, for example 10 in the decimal system
numbers[countable usually singular]HM technical
to talk to someone to find out what is happening about something