Vena obturatoria is a medical term used to describe a vein located in the pelvis. This vein is responsible for transporting oxygen-depleted blood from the lower limbs back to the heart. Though it is a specific term, there are numerous synonyms you can use to describe this vein. Some possible synonyms for vena obturatoria include pelvic vein, femoro-obturator vein, obturator vein, and obturator externus vein. Other potential terms to use are external obturator vein, posterior femoral vein, and deep femoral vein. With so many synonyms available, it's important to choose the term that best fits your context and audience.