1

**:**having the form of a cube

**:**cubical

2

a

**:**relating to the cube considered as a crystal form

3

b

**:**being the volume of a cube whose edge is a specified unit

cubic inch

4

**:**of third degree, order, or power

a cubic polynomial

**:**a cubic curve, equation, or polynomial

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Merriam-Webster unabridged
## Share