What does size mean?
Size is a common noun that names the dimensions, magnitude, or amount of something. It may refer to physical measurements, such as the length and width of an object, but it also measures abstract qualities: the size of a crowd, a problem, or an opportunity. As a verb, size means to determine or estimate dimensions, to adjust something to a desired scale, or, in the idiom size up, to assess someone or something. Another established use is a standardized category, as in shoe sizes or the size of a garment. The word is neutral in ordinary use, though comments about people's body dimensions can be insensitive if used carelessly. In computing, size similarly describes storage capacity or the amount of data. Overall, size is a flexible everyday term whose meaning follows context, shifting between measurement, classification, and appraisal.
The dimensions, magnitude, or amount of something; also a category in which things are classified according to scale or dimensions.
"The company produces jackets in a wide range of sizes."
The noun may be countable or uncountable, depending on whether separate measurements or standardized categories are being discussed.
To determine or estimate the dimensions, magnitude, or amount of something; also to adjust or classify something according to its size.
"The tailor sized the jacket to the customer's measurements."
In the phrase size up, the verb means to assess or evaluate someone or something.
Use the plural for separate measurements, dimensions, or standardized categories.
"The shop stocks several sizes of running shoes."
From the bulk of an object to the capacity of a file, size compresses the physical and the digital into one everyday word.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does size come from?
Size entered Middle English in the form sise, borrowed from Anglo-French sis, a word meaning amount or bulk. The ultimate origin of that French word is uncertain, so no more distant cognates can be assigned with confidence.
Related word forms
How size is actually used
The word is neutral in most contexts, but references to people's body dimensions can be insensitive when used carelessly. In computing, size may describe storage capacity or the amount of digital data rather than physical dimensions.
Easily confused with size
Size refers to dimensions, magnitude, or amount, whereas seize means to grasp, capture, or take possession of something.