| HA | accumulation of blood in the vagina and uterus |
|---|---|
| HA | accumulation of menstrual blood in the vagina (usually due to an imperforate hymen) |
| HA | a measuring instrument to determine (usually by centrifugation) the relative amounts of corpuscles and plasma in the blood |
| HA | the ratio of the volume occupied by packed red blood cells to the volume of the whole blood as measured by a hematocrit |
| HA | an abnormally low number of red blood cells in the blood |
| HA | the presence of red blood cells in the urine |
| HA | the formation of blood cells in the living body (especially in the bone marrow) |
| HA | pertaining to the formation of blood or blood cells |
| HA | a colorless protein obtained by removing heme from hemoglobin |
| HA | an orange-yellow pigment in the bile that forms as a product of hemoglobin |
| HA | of or relating to or involved in hematology |
| HA | a doctor who specializes in diseases of the blood and blood-forming organs |