Hematocrit is a blood test that measures the percentage of the volume of whole blood that is made up of red blood cells. This measurement depends on the number of red blood cells and the size of red blood cells.
Definition of profound for Students. 1  1 : having or showing great knowledge and understanding a profound thinker. 2  2 : very deeply felt profound sorrow.
jump to other results. 1very great; felt or experienced very strongly profound changes in the earthâs climate My father's death had a profound effect on us all. The news came as a profound shock. The report has profound implications for schools. Her sense of disappointment was profound. 2showing great knowledge or understanding profound insights a profound book. 3needing a lot of study or thought profound questions about life and death.