## base

(bAs') *n.*

1. a number used as a point of reference in measuring or determining the magnitude of numbers, as in logarithms, exponentiation, number systems, floating point values, etc.

2. the number to which an exponent is applied; the left operand of the exponentiation operator.

3. the number used in defining a system of numerals, written as the numeral 10, such as ten in the decimal system and two in the binary system.

4. in a floating point form, the number, usually 2, to which the exponent is applied to indicate the approximate magnitude of the value.

5. a SAS dataset to which the observations of another SAS dataset are appended.

*adj.*

6. comprising the minimum components necessary for the functionality of a system.

## BASE *(SAS word)*

*Library engine.*

## base SAS

(bAs' sas') *n.*

the principal SAS product, encompassing the most generally useful features of SAS software. It includes the SAS supervisor, engines, functions, informats, formats, programming and Explorer windows, etc.