Webster Dictionary (4.00 / 1 vote) Rate this definition: Proficiency (noun) the quality of state of being proficient; advance in the acquisition of any art, science, or knowledge; progression in knowledge; improvement; adeptness; as, to acquire proficiency in music
Additional terms include: 1  retrocessed uterus: both the superior and inferior ends of the uterus are pushed posteriorly.  severely anteflexed uterus: the uterus is in the same position as normal and bends in the same direction (concave is anterior) but the bend is much more pronounced.
Another condition known as uterus duplex bicollis occurs when a woman has two each of the uterus and cervix, but only one vagina. If there is doubling of the uterus but only one cervix and vagina, the condition is termed bicornuate uterus. It is also possible to have abnormal development in only one of the two Mullerian ducts, which can lead to an abnormality called unicornuate uterus, with only one normal Fallopian tube.