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Definition of Vomitus

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Vomitus: Matter from the stomach that has come up into and may be ejected beyond the mouth, due to the act of vomiting.

When vomitus is reddish or the color of coffee grounds, it may mean there is serious internal bleeding. The reddish color may herald fresh blood and dark blood may betoken blood that has been digested.

Vomitus and vomit are synonymous as nouns although only vomit is used as a verb. The act of vomiting is also called emesis. From the Indo-European root wem- (to vomit), the source of the words such as emetic and wamble (to feel nauseated).

Reviewed on 12/21/2018

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