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.
1. a feeling or attitude of profound respect, usually reserved for the sacred or divine; devoted veneration. 2. an outward manifestation of this feeling, esp a bow or act of obeisance. 3. the state of being revered or commanding profound respect. 4. saving your reverence archaic a form of apology for using an obscene or taboo expression.