In

mathematics
Mathematics (from Greek: ) includes the study of such topics as numbers (arithmetic and number theory), formulas and related structures (algebra), shapes and spaces in which they are contained (geometry), and quantities and their changes (cal ...

, metric dimension may refer to:
* Metric dimension (graph theory), the minimum number of vertices of an undirected graph ''G'' in a subset ''S'' of ''G'' such that all other vertices are uniquely determined by their distances to the vertices in ''S''
* Minkowskiâ€“Bouligand dimension (also called the metric dimension), a way of determining the dimension of a fractal set in a Euclidean space by counting the number of fixed-size boxes needed to cover the set as a function of the box size
* Equilateral dimension of a metric space (also called the metric dimension), the maximum number of points at equal distances from each other
* Hausdorff dimension, an extended non-negative real number associated with any metric space that generalizes the notion of the dimension of a real vector space
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