silo

American  

[sahy-loh] / ˈsaɪ loʊ /

noun

silos plural

1. a structure, typically cylindrical, in which fodder or forage is kept.

   The dairy farm's two biggest buildings were the barn and the silo full of feed for the cows.

2. a pit or underground space for storing grain, green feeds, etc.

3. Military. an underground installation constructed of concrete and steel, designed to house a ballistic missile and the equipment for firing it.

4. a group, unit, enterprise, etc., that is isolated from others or functions independently, typically viewed as not deriving the benefits of interrelationships or collaboration.

   Fundraising department silos happen when different teams don't share their ideas and plans.

5.  information silo.   data silo.  Computers. an unintegrated data repository that cannot share its stored data with other systems, subsystems, or applications.

   When an organization deploys a stand-alone solution to improve operations, it risks creating a data silo that may present difficulties when trying to scale throughout the enterprise.

---

verb (used with object)

siloed, siloing

1. to put into or preserve in a silo, as fodder, grain, or missiles.

2. to separate or isolate (a group, unit, enterprise, etc.) from others.

   We Americans are now more sheltered and siloed in our sources of news than ever before.

silo British  

/ ˈsaɪləʊ /

noun

1. a pit, trench, horizontal container, or tower, often cylindrical in shape, in which silage is made and stored

2. a strengthened underground position in which missile systems are sited for protection against attack

---

Other Word Forms

Inflected Forms

noun

• silos
  plural

Etymology

Origin of silo

First recorded in 1825–35; from Spanish: “place for storing grain, hay, etc.,” originally, “subterranean”; further origin uncertain

Explanation

A silo is a cylindrical tower used for bulk storage, like grain silos that stand tall near farms. Another kind of silo is harder to see — military silos are underground. Farming and war are pretty different, but they both involve silos. You may have seen a silo if you've ever visited a farm. A silo is a tall tower with a cylindrical (rounded) shape. The silo holds anything the farmer needs to store in bulk, especially feed for the animals. Other, non-farm silos hold material such as cement or coal. The military type of silo holds something more dangerous: missiles. These silos store the missiles underground until they’re fired.

Example Sentences

They live in a silo for two, sharing their pain, icing their scars.

From Los Angeles Times • May 15, 2026

During his 2005 confirmation hearings to become chief justice, Roberts described an idyllic heartland childhood lifted from a John Cougar Mellencamp song, all “endless fields” that were “punctuated by an isolated silo or a barn.”

From Slate • May 7, 2026

My main issue with Dekoda was that the info existed in a silo.

From The Wall Street Journal • Oct. 26, 2025

On June 17, in the middle of Pride Month, the Trump administration’s Substance Abuse and Mental Health Services Administration announced that it “will no longer silo LGB+ youth services.”

From Salon • Jul. 17, 2025

She flew up the river valley, spotted a rat moving along the side of a farm silo, and took it.

From "Frightful's Mountain" by Jean Craighead George

Related Words

• cellar
• granary
• storehouse