cubic

立方

長さの単位に付け、各辺がその長さの立方体の体積を表す。

やさしい英語で： Used with a length unit to measure space, as in a box equally long, wide, and high.

• The tank holds two cubic metres of water.
• We ordered ten cubic feet of soil.
• How many cubic centimetres does this container hold?

よく使う表現： cubic metre, cubic foot, cubic centimetre

三次の

未知数の最も高い指数が三である数式を表す。

やさしい英語で： Describing a mathematical expression in which the highest power of the unknown number is three.

• We solved a cubic equation.
• This cubic polynomial has three real roots.
• Can you draw the graph of a cubic function?

類義語： third-degree

よく使う表現： cubic equation, cubic polynomial, cubic function

立方晶の

立方体のように、長さの等しい三本の軸が直角に交わる結晶構造の。

やさしい英語で： Having three equal axes that meet at right angles, like the shape of a cube.

• Salt has a cubic crystal structure.
• The mineral belongs to the cubic system.
• These crystals show cubic symmetry.

類義語： isometric, monometric

よく使う表現： cubic crystal, cubic structure, cubic symmetry

三次曲線

最高次数が三の方程式で表される曲線。

やさしい英語で： A curve described by a mathematical equation whose highest power is three.

• The graph shows a cubic.
• A line can meet this cubic at three points.
• We compared two cubics in class.

類義語： cubic curve

よく使う表現： plane cubic, smooth cubic, a cubic