Here's what rhymes with microchimerism.
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rhythm arisen risen mizzen given vision listen mission prison incision fission envision imprison riven addition condition driven edition ambition emission intuition excision ignition omission derision magician dentition rendition audition stiffen glisten position decision division commission permission physician admission algorithm petition coalition cognition collision inhibition nutrition revision clinician forgiven imposition musician remission tuition apparition attrition erudition fruition sedition technician volition contrition indecision intermission logarithm striven logician rhetorician ebullition munition prevision rescission definition opposition tradition competition composition provision recognition television transition acquisition precision repetition suspicion abolition ammunition deposition exhibition partition submission admonition circumcision demolition requisition apposition inquisition paroxysm patrician precondition cataclysm electrician manumission premonition dietitian imprecision tactician transmission disposition expedition supervision exposition politician prohibition supposition preposition interposition disquisition theoretician academician readmission proposition decomposition superstition subdivision malnutrition mathematician extradition indisposition redefinition predisposition transposition presupposition superposition obstetrician pediatrician statistician diagnostician juxtaposition superimposition wisdom serum theorem cecum gingham system kingdom victim dictum gypsum fearsome winsome symptom pilgrim ecosystem