Semantics as a field of study also has significant ties to various representational theories of meaning including truth theories of meaning, coherence theories of meaning, and correspondence theories of meaning. Each of these is related to the general philosophical study of reality and the representation of meaning.
packed-cell volume (PCV) hematocrit. plasma volume the total volume of blood plasma, i.e., the extracellular fluid volume of the vascular space; see also blood volume. red cell volume the total volume of red cells in the body; see also blood volume.
What is RSV? RSV stands for Respiratory Syncytial Virus â a virus that affects the respiratory tract, usually in children under two. When adults and older children have it, it's usually very mild. Small children and infants admitted to the hospital with respiratory illness often have RSV, and it's most common in early spring and winter.