Here's what rhymes with ichtyological.
logical biological illogical dialogical geological analogical etiological typological zoological tautological ethological urological audiological psychological ideological theological ecological pathological ontological genealogical histological topological ethnological hydrological aetiological embryological horological technological archaeological chronological morphological neurological mythological pedagogical phonological astrological philological radiological teleological archeological serological terminological speleological physiological sociological methodological epidemiological eschatological immunological meteorological bacteriological mineralogical gynecological hematological dermatological gynaecological haematological ornithological pharmacological neuropsychological microbiological toxicological biotechnological musicological phenomenological psychophysiological neurophysiological electrophysiological Words that almost rhyme with ichtyological
tropical prodigal periodical nontropical subtropical astronautical microscopical semitropical conical chronicle comical ironical rhetorical diabolical dropsical hospital historical philosophical economical astronomical categorical symbolical theosophical pocketsful paradoxical metaphorical ahistorical taxonomical gastronomical uneconomical unhistorical prehistorical