# Definition of cubic in English:

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## cubic

Pronunciation: /ˈkyo͞obik/

## adjective

1Having the shape of a cube: a cubic room
More example sentences
• There's nothing new about his style, for it reminds me of Andri Masson's painting, especially the way he strokes the brush and plays with cubic shapes.
• There are also a few huge boulders which were chiselled into cubic shapes centuries ago and now serve as surreal houses and stables.
• They usually were of cubic shape, and were sealed with an airtight lock that ran three-quarters of the way around the middle of the box, leaving one side to hinge on.
1.1Denoting a unit of measurement equal to the volume of a cube whose side is one of the linear unit specified: 15 billion cubic meters of water
More example sentences
• At 4:35 pm, the flow volume reached 750 cubic metres per second.
• A 737 freighter can carry about 16 tonnes, and has about 120 cubic metres of volume.
• The pool takes up a volume of 66 cubic metres and weighs over 80 metric tons.
1.2Involving the cube (and no higher power) of a quantity or variable: a cubic equation
More example sentences
• The first person known to have solved cubic equations algebraically was del Ferro but he told nobody of his achievement.
• Lagrange's main object was to find out why cubic and quartic equations could be solved algebraically.
• He solved cubic equations by extending an algorithm for finding cube roots.
1.3Of or denoting a crystal system or three-dimensional geometric arrangement having three equal axes at right angles.
Example sentences
• She noted that many dark purple to nearly black cubic crystals exhibit a stairstep growth pattern.
• Another relatively new discovery is pyrite as attractive, sharp, cubic crystals, to 1 cm on edge, altered to goethite.
• Groups of well-formed octahedrally modified cubic crystals were found, with individuals to 3.5 cm across.

## noun

Mathematics
A cubic equation, or a curve described by one.
Example sentences
• After subsequent work failed to solve equations of higher degree, Lagrange undertook an analysis in 1770 to explain why the methods for cubics and quartics are successful.
• In this classification of cubics, Newton gives four classes of equation.
• He wrote articles on such diverse topics as twisted cubics, developable surfaces, the theory of conics, the theory of plane curves, third- and fourth-degree surfaces, statics and projective geometry.

## Derivatives

#### cubical

Pronunciation: /ˈkyo͞obək(ə)l/
adjective
Example sentences
• Played in an eight by eight-meter court inside a wire cubical cage three meters high, full body contact with other players is the beauty of the game.
• I'm staring at a neat cubical wombat dropping, perched on the side of the path.
• In the Eklakhi Tomb we see for the first time an Islamic curved roof inspired from the bamboo version, and the slight slope on the roof is a departure from traditional cubical construction and served to throw off rainwater.

#### cubically

Pronunciation: /-ik(ə)lē/
adverb
Example sentences
• His poems build cubically, back and front and side-angle at once, with glimpses and partials, memories and immediacies held up in time.
• These cubes alternate with cubically coordinated void spaces along the axial directions of the structure.
• You have to think vertically, laterally and cubically to make the most of storage space in your home.

## Origin

Late 15th century (in the sense 'involving the cube (and no higher power)'): from Old French cubique, or via Latin from Greek kubikos, from kubos 'cube'.

cherubic, pubic

## For editors and proofreaders

Syllabification: cu·bic

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