Culmination rhymes with:
abomination, antidiscrimination, contamination, decontamination, denomination, determination, discrimination, dissemination, domination, elimination, emanation, examination, extermination, germination, illumination, incrimination, insemination, nomination, reexamination, renomination, self-determination, termination, transillumination
Culmination sounds like:
celandine, celentano, clanton, claymation, clementine, clendenen, clendenin, clinton, clonidine, colantonio, colantuono