Here's what rhymes with truncation.

Consider these alternatives

discretization / education generalisation / relation perturbation / education electromigration / relation topology / authority metasomatism / given transposition / position parametrization / education undecidability / stability rectification / education generalization / relation negation / education iterative / native obfuscation / education parallelization / education oligomerization / education contraposition / position divisibility / ability qr / cr distributive / redistributive factorization / education