os

/ɑs/
noun
  1. An opening in the body, especially the mouth or a similar orifice.
    • The os of the stomach connects to the esophagus.
    • In anatomy, the os is often used to describe a mouth-like opening.
    • The doctor examined the os of the patient's cervix.
  2. A bone (used in medical or scientific contexts).
    • The skeleton includes many types of os, such as the femur.
    • The os coxae is another name for the hip bone.
    • He fractured the os in his wrist during the fall.
Synonyms
What does "os" mean? | whatsthatwordmean | whatsthatwordmean