Definition of cubic in English:
cubic
Line breaks: cubicPronunciation: /ˈkjuːbɪk
/
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 threequarters of the way around the middle of the box, leaving one side to hinge on.
1.1Denoting a crystal system or threedimensional geometrical arrangement having three equal axes at right angles: the sodium and chloride ions form two intersecting cubic structures
More 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 wellformed octahedrally modified cubic crystals were found, with individuals to 3.5 cm across.
2Denoting a unit of measurement equal to the volume of a cube whose side is one of the linear units specified: 15 billion cubic metres 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.
3Involving 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.
noun
Mathematics Back to top A cubic equation, or a curve described by one.
More 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 fourthdegree surfaces, statics and projective geometry.
Derivatives

cubical
adjective
 More example sentences
 Played in an eight by eightmeter 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
adverb
 More example sentences
 His poems build cubically, back and front and sideangle 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 kobos 'cube'.