min·i·mum 
(mĭnə-məm)
(mĭnə-məm)n. pl. min·i·mums or min·i·ma (-mə)
1.
a. The least possible quantity or degree.
b. The lowest degree or amount reached or recorded; the lower limit of variation.
2. A lower limit permitted by law or other authority.
3. A sum of money set by a nightclub or restaurant as the least amount each patron must spend on food and drink.
4. Mathematics
a. The smallest number in a finite set of numbers.
b. A value of a function that is less than any other value of the function over a specific interval.
adj.
Of, consisting of, or representing the lowest possible amount or degree permissible or attainable.
[Latin, from neuter of minimus, least; see mei-2 in the Appendix of Indo-European roots.]