GMAT Vocabulary Flash Cards @ englishpdf.com and englishteststore.com File 101 cataclysm (n) Any overwhelming flood of water catalyst (n) anything which creates a situation in which change can occur cataract (n) Opacity of the lens of the eye resulting in complete or partial blindness catastrophe (n) Any great and sudden misfortune or calamity catharsis (n) a purging or relieving of the body or soul cathode (n) The negative pole or electrode of a galvanic battery Catholicism (n) The system, doctrine, and practice of the Roman Catholic Church catholicity (n) Universal prevalence or acceptance