Here's what rhymes with interhelical.
helical angelical evangelical Words that almost rhyme with interhelical
spherical hysterical hemispherical vesicle vesical heretical antithetical unethical technical theoretical lexical poetical metrical imperceptible parenthetical testicle hermetical identical dialectical geometrical symmetrical biomedical indelible nonsensical academical obstetrical diametrical electrical alphabetical asymmetrical arithmetical ecumenical exegetical nontechnical unsymmetrical petrochemical nonidentical extendible pyrotechnical incomprehensible infinitesimal electrochemical nonelectrical trigonometrical