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.
A tilted uterus, also called a tipped uterus, retroverted uterus or retroflexed uterus, is a normal anatomical variation. It shouldn't interfere with your ability to conceive. In most women, the uterus tips forward at the cervix. About 1 in 4 women, however, has a uterus that leans backward, or tilts, at the cervix. In the past, doctors thought that a tilted uterus might have contributed to infertility. But experts now know that the position of the uterus doesn't affect the ability of sperm to reach an egg.