DIM statement
<programming> (From "dimension") A
keyword in most versions of the
BASIC programming language that declares the size of an
array.
E.g.
DIM A(100)
declares a one-dimensional array with 101 numeric elements (including A(0)).
Visual Basic uses the DIM (or "Dim") statement for any variable declaration, even scalars, e.g.
Dim DepartmentNumber As Integer
which declares a single (scalar) variable of type Integer.