Measurement is the estimation of the magnitude of some attribute of an object, such as its length or weight, relative to a unit of measurement. Measurement usually involves using a measuring instrument, such as a ruler or scale, which is calibrated to...

measure (mathematics)

for well-ordered sets: ordinal number (equal if there is an order-isomorphism)

Human height

cardinality (equal if there is a bijection)

Body dimensions

Sizing, gelatinous or glutinous substances used as a glaze or filler for porous materials such as paper or cloth

Human weight

Size (Unix), a command-line Unix tool.

Magnitude of brightness or intensity of a star or an earthquake as measured on a logarithmic scale.

Dimensions: length, width, height, diameter, perimeter, area, volume

Clothing sizes such as shoe size or dress size

In statistics (hypothesis testing), the size of the test refers to the rate of false positives, denoted by α.

In computing, filesize