volume of distribution

symbol: $V_{\rm{d}}$
https://doi.org/10.1351/goldbook.12738
Apparent (hypothetical) volume of fluid required to contain the total amount of a substance in the body at the same concentration as that present in the plasma assuming equilibrium has been attained.
Source:
PAC, 2013, 85, 1725. (Glossary of terms used in medicinal chemistry. Part II (IUPAC Recommendations 2013)) on page 1754 [Terms] [Paper]