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.
Some of the causes of a retroverted uterus include: 1  Natural variation â generally, the uterus moves into a forward tilt as the woman matures. 2  Adhesions â an adhesion is a band of scar tissue that joins two (usually) separate anatomic surfaces together. 3  Endometriosis â the endometrium is the lining of the uterus.