Thrombosis rhymes with:
acidosis, apotheosis, arteriosclerosis, asbestosis, cirrhosis, diagnosis, fibrosis, heterosis, hypnosis, meiosis, misdiagnosis, necrosis, nephrosis, neurosis, prognosis, psychosis, sclerosis, symbiosis
Thrombosis sounds like:
tarnoff's, tramps, triumphs, trump's, trumps, turnbaugh, turnbough, turnips, turnpike, turnpikes