## Wikipedia - جرعة الطاقة الممتصة absorbed dose, $$D$$

of radiation
https://doi.org/10.1351/goldbook.A00031
Energy imparted to matter by @I03216@ in a suitable small element of volume divided by the mass of that element of volume.
Sources:
Orange Book, 2nd ed., p. 220 [Terms] [Book]
PAC, 1993, 65, 2003. (Glossary for chemists of terms used in toxicology (IUPAC Recommendations 1993)) on page 2007 [Terms] [Paper]
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 959 [Terms] [Paper]