/ Dictionary / Index C carcinoid syndrome: Meaning and Definition of Find definitions for: car'cinoid syn"drome Pronunciation: (kär"su-noi-dō'sis). [key] — Pathol. Pathol. the systemic effects, including flushing, palpitations, diarrhea, and cramps, resulting from increased blood levels of serotonin secreted by a carcinoid. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. carcinoid carcinoma Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language