IgA Deficiency. Print. IgA deficiency is a defect in the immune system characterized by an inadequate amount of the antibody class known as immunoglobulin A (IgA). Antibodies are large proteins produced by the body to fight infections caused by invaders, such as bacteria, viruses, fungi, parasites, and other foreign agents.
Definition of ultimo. : of or occurring in the month preceding the present.
ulÂ·tiÂ·mo. Use ultimo in a sentence. Old-fashioned (in the) last (month): yours of the 13th (day) ultimo received. Origin of ultimo. Classical Latin ultimo (mense), (in the) last (month), ablative singular of ultimus: see ultima.