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