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
- A tall cylindrical structure, usually beside a barn, in which fodder is stored; also, a pit dug for the same purpose.
- An underground structure for housing and launching a guided missile.
- A large bin for storing loose material such as coal or cement.
- A department or group that works in isolation from others.
Verb
- To store in a silo.
Related words
- silage
- ensilage
- granary
References
- ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
- ^ a b c d e f Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
- ^ a b c d e f g h Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
- ^ a b c Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
- ^ a b Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
- ^ 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.
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