My thoughts would be to refer to a torus as being "torical", though I can't seem to find any use of that word anywhere. Is there a proper word for describing an object that has a similar shape to that of a torus?
For reference: a torus
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The word toroidal means "of, relating to, or shaped like a torus or toroid" according to Merriam-Webster. If you want to describe something's being doughnut shaped, that's your best bet.