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.
overtax (oÊvÉÊ³tÃ¦ks ) Word forms: 3rd person singular present tense overtaxes , present participle overtaxing , past tense , past participle overtaxed. 1. verb. If you overtax someone or something, you force them to work harder than they can really manage, and may do them harm as a result. ...a contralto who has overtaxed her voice.