Here's what rhymes with tectonomagmatic.
magmatic asthmatic static climatic dogmatic emphatic pragmatic schematic somatic thematic enigmatic erratic pneumatic rheumatic chromatic fanatic operatic achromatic dramatic automatic hepatic aromatic traumatic ecstatic enzymatic lymphatic metastatic axiomatic kinematic phlegmatic spermatic zygomatic acrobatic schismatic astigmatic numismatic stigmatic undramatic nondramatic unemphatic democratic pancreatic autocratic charismatic aliphatic cinematic emblematic monochromatic paradigmatic prismatic programmatic diaphragmatic idiomatic muriatic theocratic undemocratic panchromatic aerobatic diplomatic systematic aristocratic problematic symptomatic prostatic melodramatic psychosomatic diagrammatic orthostatic technocratic unproblematic unsystematic antidemocratic epigrammatic nondemocratic thermostatic undiplomatic bureaucratic asymptomatic hydrostatic homeostatic intrahepatic posttraumatic meritocratic plutocratic semiautomatic photostatic unidiomatic homoeostatic idiosyncratic electrostatic Words that almost rhyme with tectonomagmatic
magic tragic nomadic apparatchik sporadic pelagic syllabic priapic monosyllabic disyllabic polysyllabic manic mastic classic graphic panic lactic tactic phallic clastic tannic malefic dynamic traffic elastic plastic romantic fabric gastric metallic semantic ceramic drastic frantic monastic catholic dynastic mechanic synaptic climactic galactic spastic italic unromantic tyrannic matchstick organic fantastic gigantic psychiatric scholastic thoracic didactic hemorrhagic inelastic oceanic cephalic galvanic glutamic messianic panoramic pedantic thalamic tympanic aplastic gymnastic haemorrhagic iconographic satanic titanic bimetallic bombastic nonmetallic slapstick ataxic botanic neoclassic baldric nonelastic demographic geographic inorganic volcanic barbaric ethnographic neoplastic pediatric sarcastic stochastic chromatographic geriatric nostalgic ophthalmic topographic heraldic holographic iconoclastic orthographic psychopathic tomographic isobaric oceanographic orgiastic paediatric biographic calligraphic sycophantic phonographic seismographic enthusiastic photographic prophylactic radiographic thermodynamic aerodynamic bibliographic ecclesiastic endoplasmic hemodynamic pornographic presynaptic psychodynamic telegraphic anaphylactic angiographic cartographic lithographic splanchnic thermoplastic viscoelastic chiropractic stenographic typographic unenthusiastic anticlimactic intergalactic osteopathic periphrastic xerographic postsynaptic stratigraphic crystallographic hyperplastic hypoplastic cinematographic autobiographic choreographic interscholastic cytoplasmic hypothalamic hydrodynamic transatlantic intrathoracic protoplasmic lexicographic transoceanic overenthusiastic electroencephalographic electrocardiographic