/ Dictionary / Index C cisplatin: Meaning and Definition of Find definitions for: cis•plat•in Pronunciation: (sis-plat'n), [key] — n. Pharm. a platinum-containing white powder, PtClHN, used to treat ovarian carcinoma and other cancers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cismontane cissoid Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language