Size

The word size may refer to how big or small something is. In particular:

• Measurement, the process or the result of determining the magnitude of a quantity, such as length or mass, relative to a unit of measurement, such as a meter or a kilogram
• Dimensions, including length, width, height, diameter, perimeter, area, volume
• Clothing sizes such as shoe size
• Body dimensions (Anthropometry)
  • Human height, the distance from the bottom of the feet to the top of the head in a human body standing erect
  • Human weight
• In statistics (hypothesis testing), the size of the test refers to the rate of false positives, denoted by α
• In computing, file size
• size (Unix), a command-line Unix tool
• Magnitude (mathematics), magnitude or size of a mathematical object
• Magnitude of brightness or intensity of a star or an earthquake as measured on a logarithmic scale
• In mathematics there are, in addition to the dimensions mentioned above (equal if there is an isometry), various other concepts of size for sets:
  • measure (mathematics), a systematic way to assign to each suitable subset a number
  • cardinality (equal if there is a bijection), of a set is a measure of the "number of elements of the set"
  • for well-ordered sets: ordinal number (equal if there is an order-isomorphism)
• Resizing (fiction), a theme in fiction, in particular in fairy tales, fantasy, and science fiction
• Sizing, or size, a filler or glaze
• Demonstrating Size (dimension)