dimension

Everyday

1. A dimension is a measurement in one direction, like length, width or height. tree →
2. The dimensions of something are its size: its length, width and height. tree →
3. A dimension is a part or side of something, like a problem or a feeling. tree →
4. In stories, another dimension is a different world or reality. tree →

In the lessons

In maths: 2D shapes have two dimensions (length and width), 3D shapes have three (length, width, height). Pupils find dimensions to work out area and volume. In everyday life: the dimensions of a room or a box. Phrases: 2D, 3D, dimensions of, a new dimension.

Examples

• A square is a 2D shape: it has two dimensions. tree →
• A cube has three dimensions. tree →
• What are the dimensions of the box? tree →
• The room's dimensions are 4 metres by 3 metres. tree →
• Write the dimensions of the rectangle and find its area. tree →
• Music added a new dimension to the play. tree →
• In the story, the children slipped into another dimension. tree →
• A line has only one dimension, its length. tree →
• The Greek Sphinx may be recognized by having wings and by being of smaller dimensions than the Egyptian Sphinx. tree →

Note

Countable. "2D" = two-dimensional, "3D" = three-dimensional. Adjective: dimensional. In maths, dimensions 4 m by 3 m give area 4 × 3 = 12 square metres; three dimensions multiply to give volume.

In Jewish tradition

In Sefer Yetzirah, the six dimensions are the six directions of space: up, down, east, west, north and south.

Interpretation. The book says God sealed the six dimensions with the letters of His Name, so that all space carries the Name. Readers have linked them to the six days of creation.

Examples

• 15) According to the author, the space and six dimensions emanated from the ether. (Sefer Yetzirah, Kalisch 1877) tree →
• He sealed them with spirit and fastened them to His great name and sealed with it six dimensions. (Sefer Yetzirah, Kalisch 1877) tree →
• He sealed them with spirit and fastened them to His great name and sealed with it six dimensions. [15] (Sefer Yetzirah, Kalisch 1877) tree →

Note

Countable. "2D" = two-dimensional, "3D" = three-dimensional. Adjective: dimensional. In maths, dimensions 4 m by 3 m give area 4 × 3 = 12 square metres; three dimensions multiply to give volume.