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