Etymologically

silo

Etymology and origin of the English word silo

Pronunciation

  • IPA: /ˈsaɪləʊ/ (UK); /ˈsaɪloʊ/ (US)[1]

Etymology

It is borrowed from Spanish silo (“place for storing grain”),[2][3][4][5][6] of uncertain further origin.[6] It is traditionally derived from Latin sīrus, from Ancient Greek σιρός (sirós, “pit for storing grain”),[3][4] but Barnhart objects that the change from r to l is abnormal in Spanish and suggests a pre-Roman source related to Basque zilo “dugout, cave for storing grain”.[3][4]

Earliest recorded meaning

A pit or underground chamber for storing grain or roots (1835).[7][3][4]

Semantic evolution

The word at first usually referred to other countries and was explained when used.[4] By 1867–81 it named an airtight chamber or tower in which green fodder is preserved as silage.[4][7][5] It was extended to a large bin for loose materials such as cement (1920)[7] and to an underground structure from which a guided missile can be fired (1958).[7][4] In modern business jargon a silo is a department or group that works in isolation from others.[1]

Timeline

  • 1835 – a storage pit.[7][3][4]
  • 1881 – a chamber or tower for making silage.[7][5]
  • 1883 – verb, to store in a silo.[7][3]
  • 1920 – a bin for loose materials.[7]
  • 1958 – an underground missile silo.[7]

Modern meaning

Noun

  1. A tall cylindrical structure, usually beside a barn, in which fodder is stored; also, a pit dug for the same purpose.
  2. An underground structure for housing and launching a guided missile.
  3. A large bin for storing loose material such as coal or cement.
  4. A department or group that works in isolation from others.

Verb

  1. To store in a silo.
  • silage
  • ensilage
  • granary

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  3. ^ a b c d e f Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
  4. ^ a b c d e f g h Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
  7. ^ a b c d e f g h i Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Silo.” Etymologically, 11 Oct. 2026, etymologically.com/en/silo. Accessed 11 Oct. 2026.

Last edited on . ·