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)

### Famous quotes containing the word size:

“Beauty depends on *size* as well as symmetry. No very small animal can be beautiful, for looking at it takes so small a portion of time that the impression of it will be confused. Nor can any very large one, for a whole view of it cannot be had at once, and so there will be no unity and completeness.”

—Aristotle (384 B.C.–322 B.C.)

“The obese is ... in a total delirium. For he is not only large, of a *size* opposed to normal morphology: he is larger than large. He no longer makes sense in some distinctive opposition, but in his excess, his redundancy.”

—Jean Baudrillard (b. 1929)

“Men of genius are not quick judges of character. Deep thinking and high imagining blunt that trivial instinct by which you and I *size* people up.”

—Max Beerbohm (1872–1956)