1. A lower than normal number of red blood cells in the blood: "The results of the blood work done by the doctor indicated that Lora was suffering from anemia."

"The degree of anemia in Percy alarmed the doctor and so she prescribed medications."

2. A condition in which a person's blood does not have enough red corpuscles: "The severity of anemia is usually determined by how much the red blood cells have been decreased because when there is inadequate hemoglobin (iron-containing pigments of the red blood cells), all parts of the body receive less oxygen and have less energy than is normally needed to function properly."