Essential Greek and Latin Roots for Tenth Grade Students: cor, cord, cardio

Have a heart, and learn these words that derive from the Latin root cor and the Greek root cardio, both meaning "heart."
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Full list of words from this list:

words only definitions & notes
  1. cordial
    politely warm and friendly
    Since then, the two have been more cordial than chummy.
    – The Washington Post
    cor + ial (suffix forming adjectives)
  2. concord
    a harmonious state of things and of their properties
    These people lived very long in peace, in concord, in harmony, in happiness.
    – Jeremiah Curtin
    com (prefix meaning "together") + cor
  3. accord
    harmony of people's opinions or actions or characters
    As by common accord, they all rose to their feet. And Then There Were None
    ad (prefix meaning "to") + cor
  4. discord
    strife resulting from a lack of agreement
    The only discord comes when we’re driving home and a fight breaks out in the backseat. Every Day
    dis (prefix meaning "apart") + cor
  5. cardiac
    of or relating to the heart
    One algorithm, created by Hsiao, measures heart size and blood flow in a cardiac MRI.
    – Science
    cardi + ic (suffix forming adjectives)
  6. cardiologist
    a specialist in the structure and function of the heart
    With the women strapped to tilt tables with their heads angled down at 65 degrees, a cardiologist checked their heart functions as an electrocardiogram recorded information every five minutes. Women in Space
    cardi + logy (suffix meaning "science") + ist (suffix meaning "one who does or makes")
  7. cardiovascular
    of or pertaining to or involving the heart and blood vessels
    "Physical activity, which in this age occurs typically in the form of play, promotes cardiovascular, musculoskeletal and mental health and is associated with academic achievement."
    – U.S. News
    cardi + vas ("vessel") + culum (suffix forming diminutives) + ar (suffix forming adjectives)
  8. courage
    a quality of spirit that enables you to face danger or pain
    “Very well, my arrogant young adventurer. Why not test your courage? Every explorer deserves a chance to prove his mettle.” Fablehaven
    cor + age (suffix forming nouns)
  9. encourage
    inspire with confidence
    I nod and wonder what to say to encourage him. All Quiet on the Western Front: A Novel
    en (prefix meaning "in, into") + cor + age (suffix forming nouns)
  10. core
    the center of an object
    A blazing ball of light appeared in her palm, and she threw it into the core of the rotating rings. The Marvellers
    cor in this case traced to the core or heart of fruit.
Created on Wed Jun 18 09:57:26 EDT 2025

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