mean corpuscular volume (MCV)
measure of average RBC volume in blood count. in anemia, it can be low, normal, or above.
mean corpuscular hemoglobin (MCH)
average mass of hemoglobin per RBC in a count. In anemia, it's low.
mean corpuscular hemoglobin concentration (MCHC)
measure of concentration of Hb in given volume of packed RBC. Hgb/Hct
red cell distribution width (RDW)
measurement of variation of RBC's width in a CBC count. if it's really wide, it could possibly mean there are fragments of RBC floating everywhere