Three-dimensional size (6)
I believe the answer is:
volume
(Other definitions for volume that I've seen before include "The bulk" , "Book - measure of loudness" , "Space occupied by an object" , "size" , "Gross < sound" .)
I believe the answer is:
volume
(Other definitions for volume that I've seen before include "The bulk" , "Book - measure of loudness" , "Space occupied by an object" , "size" , "Gross < sound" .)