Outer product

Given two three vectors the "inner" product is:


...........|X|
[x y z]|Y| = [xX + yY + zZ]
...........|Z|

Which we use all the time (dot product). There is
also an outer product:

|x|.................|xX xY xZ|
|y|[X Y Z] = |yX yY yZ|
|z|.................|zX zY zZ|

I'm not sure this is useful for anything in graphics, or even what this thing is operationally.