1 cube-shaped.
2 of three dimensions.
3 involving the cube (and no higher power) of a number (cubic equation).
4 Crystallog. having three equal axes at right angles.
Phrases and idioms:
cubic content the volume of a solid expressed in cubic metres. cubic metre etc. the volume of a cube whose edge is one metre etc.
Etymology: F cubique or L cubicus f. Gk kubikos (as CUBE)
Useful english dictionary. 2012.