How to know ordering of dimensions?

[teopb]

I apologize if this is documented somewhere but how does one know the ordering of dimensions when reading in a file? If I have two dimensions of the same length (say x = 32, y = 32) for my variable (say T) how do I know which dimension is which once the variable is read with ncread(filename, "T")? If I look at a variable with different length dimensions using ncinfo I can see the ordering displayed is different than that in the output array.