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English definition of “cube”

cube

noun [C] uk   /kjuːb/ us  

cube noun [C] (SHAPE)

a solid object with six square sides of equal size: Cut the cheese into small cubes.

cube noun [C] (NUMBER)

specialized mathematics the number made by multiplying a number twice by itself

cube

verb [T] uk   /kjuːb/ us  

cube verb [T] (SHAPE)

to cut food into cubes

cube verb [T] (NUMBER)

specialized mathematics If you cube a number, you multiply it twice by itself: 2 cubed (= 2 x 2 x 2) equals 8, and is written 23.
(Definition of cube from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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