An anemia that is characterized by circulating red blood cells that are the same size and have a normal red color and a mean corpuscular volume (MCV) between 80 and 100 fL.
An anemia that is characterized by a low normal mean corpuscular volume (MCV) (less than 80 fL) and is defined by the presence of small, often hypochromic, red blood cells in a peripheral blood smear.