Etymologically

size

Etymology and origin of the English word size

Pronunciation

  • IPA: /saɪz/[1]

size1 dimensions

Confidence
Established
Formation
Borrowing
First attested
before 1300 (Arthour and Merlin)
Borrowed from
Old French sise via Middle English
Ultimate origin
Latin (assidēre)

Etymology

The dimensions are inherited from Middle English sise, borrowed from Old French sise, short for assise (“session, assessment, regulation, manner”),[2][3][4] the source of assize,[3][5] a noun use of the past participle of asseoir (“to cause to sit”),[2] from Latin assidēre (“to sit beside; to sit in judgement”),[2][5] from ad (“to”) and sedēre (“to sit”).[2] Etymonline suggests the French form arose by misdivision of l'assise as la sise.[2]

Earliest recorded meaning

Manner, style: probably before 1300, in Arthour and Merlin,[3] and an ordinance or law about 1300;[3] an assize for the administration of justice is from before 1300.[6]

Semantic evolution

The sense “extent, magnitude” arose from the regulation of weights and food portions by fixing their amount:[2][5] it is first recorded about 1303, in Mannyng's Handlyng Synne,[3] and Etymonline has “quantity, length, stature” about 1300.[2] A fixed standard of food or drink is from about 1479,[6] and at Cambridge a portion of food is a size, hence sizar.[6][7] One of a graduated set of dimensions of manufactured goods is from the 1590s, first of shoes.[2] The verb meant “to regulate” about 1400;[2] “to make of a certain size” is from about 1600, “to sort by size” from the 1630s, and size up, “to estimate”, from 1847.[2] Try it on for size is by 1956.[2]

Timeline

  • before 1300 – manner; an assize.[3][6]
  • c. 1303 – magnitude (Mannyng).[3]
  • c. 1400 – verb, to regulate.[2]
  • 1590s – a size of shoe.[2]
  • c. 1600 – verb, to make of a certain size.[2]
  • 1847 – size up.[2]

Modern meaning

Noun

  1. The physical dimensions or extent of something.
  2. Any of a series of graded dimensions by which clothing and other goods are classified.
  3. Considerable extent or amount; relative amount.

Verb

  1. To arrange or classify by size; to make to a required size.
  2. size up: to assess.

Word family

  • sizable
  • sizeable
  • sizar
  • oversize
  • undersize
  • king-size
  • downsize

size2 glaze, glue

Confidence
Uncertain
Formation
Borrowing
First attested
c. 1325
Borrowed from
Middle French sise via Middle English
Ultimate origin
Old French (sise)

Etymology

The glaze is inherited from Middle English sise, probably borrowed from Middle French sise (“a setting, fixing”), a special use of the same Old French word that gave size1, short for assise.[3][8][9] The SOED and the COED say only that it is perhaps the same word.[4][10] Klein derives it instead from Italian sisa (“painter's glue”), short for assisa, ultimately the same Latin word.[11]

Earliest recorded meaning

A sticky substance for sealing surfaces: about 1325,[3] or about 1440 as a wash applied to paper, parchment or cloth.[6]

Semantic evolution

A semi-solid glue for gilding and painting is from 1530.[6][12] The verb “to coat with size” is figurative in 1633 and literal from 1667.[3] In weaving, size strengthens the warp, a sense recorded in the English Dialect Dictionary.[13]

Timeline

  • c. 1325 – a sticky substance.[3]
  • 1530 – a glue.[6]
  • 1633 – verb, figuratively.[3]
  • 1667 – verb, to coat with size.[3]

Modern meaning

Noun

  1. A gelatinous or glutinous substance used to glaze or fill porous materials such as paper, cloth or plaster.

Verb

  1. To treat or coat with size.

Word family

  • sizing
  • size up
  • size-up
  • assize
  • assess
  • session
  • sediment

References

  1. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  2. ^ a b c d e f g h i j k l m n o Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f g h i j k l m Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ a b c Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  6. ^ a b c d e f g Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  8. ^ The American Heritage Dictionary of the English Language (2000), 4th ed., Boston: Houghton Mifflin
  9. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  10. ^ Soanes, Catherine; Stevenson, Angus, eds. (2004), Concise Oxford English Dictionary, 11th ed., Oxford: Oxford University Press
  11. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  12. ^ Kay, Christian; Roberts, Jane; Samuels, Michael; Wotherspoon, Irené, eds. (2009), Historical Thesaurus of the Oxford English Dictionary, Oxford: Oxford University Press; online edition (2024)
  13. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)

Related etymologies

Cite this entry

“Size.” Etymologically, 15 Oct. 2026, etymologically.com/en/size. Accessed 15 Oct. 2026.

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