What does cubical mean?
Cubical is an adjective used to describe something having the shape or properties of a cube — that is, a solid figure with six equal square faces meeting at right angles. The word appears most often when describing physical objects: a cubical block, a cubical container, or a cubical building whose proportions approximate those of a perfect cube. In mathematics and science, particularly crystallography, cubical describes structures or lattices organized around a cube's geometry, such as the arrangement of atoms in certain minerals like salt. Though closely related to the more common adjective "cubic," which typically refers to volume measurements or third-degree mathematical expressions, cubical is preferred when the emphasis falls on outward shape rather than quantity. The word derives from the Latin "cubus," itself borrowed from Greek "kybos," meaning a die or cube. Because it differs by only two letters from "cubicle," the noun for a small partitioned workspace, writers should take care to distinguish between the two terms.
adjectiveShaped like or relating to a cube; having the form of a cube with six equal square faces. Also used in mathematics and crystallography to describe structures based on a cube.
- Having the shape of a cube; six-sided with equal square faces.
- (Mathematics/crystallography) Of or pertaining to a cube or cubic system.
"The sculptor carved the marble into a perfectly cubical block before adding finer details."
"Each die in the set was cut into an almost perfectly cubical form."
"In the cubic crystal system, atoms are arranged at the corners of a cubical lattice."
"Cubical" and "cubicle" differ by only two letters — but one means shaped like a cube and the other means your office desk.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cubical
Cubical traces its origin to Latin "cubicalis," derived from "cubus," meaning a cube or die, which the Romans had borrowed from Greek "kybos." The word entered English in the late 16th century as scholars adopted Latin scientific vocabulary during the Renaissance. Its cognates include "cube," "cubic," and "cuboid," all stemming from the same Greek root referring to a die — one of the earliest geometric solids studied by mathematicians.
Related word forms
How cubical is actually used
Cubical is less common than 'cubic' in everyday English and is often reserved for describing physical shapes. It is frequently confused with 'cubicle' due to their similar spelling.
Easily confused with cubical
A cubicle is a small partitioned workspace, while cubical is an adjective meaning cube-shaped.
Cubic usually refers specifically to measurement (volume) or to equations of degree three, while cubical more broadly describes anything shaped like a cube.