Breadcrumb Home > Dictionary > Index C circulatory system: Meaning and Definition of Find definitions for: cir'culatory sys"tem Pronunciation: [key] — Anat., Zool. Anat.,Zool. the system of organs and tissues, including the heart, blood, blood vessels, lymph, lymphatic vessels, and lymph glands, involved in circulating blood and lymph through the body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. circulator circulus TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: genome Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language