[jdswain]

It has 32-bit registers, but it has a 16-bit ALU, so it's a matter of opinion if that makes it a 16 or 32-bit processor. I'd go with 32-bit in that it's instruction set gives the impression to the programmer that they are working with a 32-bit system.

And for more evidence, the Z80 is referred to as an 8-bit processor but has a 4-bit ALU.

[jecel]

The 68000 actually had three 16 bit ALUs, so could munch a peak of 48 bits per clock cycle. Only one could do all operations while the other two were basically just add. These days we would say there were part of the AGU (address generator unit) but one of them was shared with the data register operations.