minimum
1 adj You use minimum to describe an amount which is the smallest that is possible, allowed, or required., (Antonym: maximum)
He was only five feet nine, the minimum height for a policeman.
2 adj You use minimum to state how small an amount is.
The basic needs of life are available with minimum effort...
3 adv If you say that something is a particular amount minimum, you mean that this is the smallest amount it should be or could possibly be, although a larger amount is acceptable or very possible., (Antonym: maximum)
You're talking over a thousand pounds minimum for one course.
4 You use at a minimum, or at the minimum, when you want to indicate that something is the very least which could or should happen.
♦
at the most phrase
(Antonym: at the maximum)
This would take three months at a minimum...
5 If you say that someone keeps something to a minimum, or to the minimum, you mean that they keep the amount of it as small as possible.
♦
to a/the minimum phrase
Office machinery is kept to a minimum...