I'd like to know whether the following sentence is grammatically acceptable.
To what they are compared defines their relationship.
Should I say "What they are compared to defines their relationship." instead?
I'd like to know whether the following sentence is grammatically acceptable.
To what they are compared defines their relationship.
Should I say "What they are compared to defines their relationship." instead?
Based on my understanding of patterns of conventional usage, I agree with Edwin that it doesn't have a natural ring to it.
If you want to keep your original sentence shape (it's a good one!) you could write
The object of comparison defines their relationship.
Or for a more flowery tone, you might try
That to which they are compared defines their relationship.
(In that example, "That" functions as a demonstrative pronoun.)
Finally, I don't know about the rules of written composition that you're working with, but in spoken English, this order is definitely fair game:
What they are compared to defines their relationship.
Their relationship is defined by what they're compared to.
Happy essay writing!