en.wikipedia.org/wiki/Dimension

In mathematics, the dimension of an object is an intrinsic ... of the term "
dimension" is as in: "A tesseract has four dimensions", ...

www.mathsisfun.com/definitions/dimension.html

A measurement of length in one direction. Examples: width, depth and height are
dimensions. A line has one dimension, a square has two dimensions,

www.mathwords.com/d/dimensions.htm

Dimensions. On the most basic level, this term refers to the measurements
describing the size of an object. For example, length and width are the
dimensions of ...

www.icoachmath.com/math_dictionary/dimensions.html

Dimensions are used to describe the size and shape of an object.....complete ...
Video Examples: SPM - Maths Form 4 - Line and Plane in 3 Dimension (Fully ...

www.dictionary.com/browse/dimensional-analysis

a method of mathematical analysis that focuses on the dimensions of length,
mass, time, etc., which aims to simplify a problem by dealing only with essential ...

www.dictionary.com/browse/dimension

Dimension definition, a property of space; extension in a given direction: A
straight ... as mass, length, and time, in terms of which all other kinds of quantity
can be ... mathematical vantage point, our dimension would seem less
dimensional.

www.mathopenref.com/plane.html

This is the 'plane' in geometry. It fits into a scheme that starts with a point, which
has no dimensions and goes up through solids which have three dimensions: ...

www.merriam-webster.com/dictionary/dimension[1]

Define dimension[1]: the length, width, height, or depth of something : a
measurement in ... dimension[1] in a sentence. ... Other Mathematics and
Statistics Terms.

mathinsight.org/definition/magnitude_vector

Formulas for the magnitude of vectors in two and three dimensions in terms of
their coordinates are derived in this page. For a two-dimensional vector a = ( a 1
...

mathforum.org/library/drmath/view/64847.html

Usually 'height' means vertical distance... but if you turn something on its side,
you might still use 'height' to refer to the dimension that _would_ ...