Here's what rhymes with semicylindrical.
cylindrical Words that almost rhyme with semicylindrical
lyrical cynical rhythmical finical physical critical mystical elliptical whimsical rabbinical sophistical tricycle arrhythmical empirical statistical analytical atypical umbilical inimical logistical uncritical apolitical egotistical subliminal untypical overcritical metaphysical geopolitical hypocritical encyclical preclinical supercritical nonphysical nonpolitical hypercritical noncritical unpolitical egoistical impermissible parasitical archetypical noncriminal indivisible sociopolitical stereotypical prototypical psychoanalytical