Please, Undi...I was going to go there, I just didn't know if it would be too much sexy too soon. I figured the boys would need some time with "-oma" first, so I was trying to pace them, but if you insist...
The suffix "-ectomy" should really be examined in conjuction with two other suffixes of the same basic derivative: "-tome" and "-tomy."
A "-tome," if you will, is the surgical instrument used for making the "-tomy," which is the surgical incision. And as you already pointed out an "-ectomy" is the surgical excision.
Now, if this thread gets deleted for being too hot to handle, I'm blaming you, Undi.
Andrew, tonight isn't about you! It isn't even about me!!! - [FD]