Medical Definition of Subjacent

  • 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.

Subjacent: Just beneath or underneath. The opposite of subjacent is superjacent. Other related terms include adjacent and circumjacent. From sub-, under + the Latin jacere, to lie = to lie under.

Reviewed on 9/7/2018

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