Definition of cubic adjective from the Oxford Advanced Learner's Dictionary

cubic

adjective
ˈkjuːbɪk
 
; ˈkjuːbɪk
 
 
1 (abbr. cu) [only before noun] used to show that a measurement is the volume of something, that is the height multiplied by the length and the widthcubic centimetres/inches/metresHow many cubic metres of water are needed to fill the tank?2 measured or expressed in cubic unitsthe cubic capacity of a car's engine3 having the shape of a cubea cubic figure