Showing results for "sac"

• a variation of Sauk.

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• sac
  sac

  noun

  a baglike structure in an animal, plant, or fungus, as one containing fluid.
• Sac
  Sac

  noun

  Sauk.
• SAC
  SAC

  noun

  Strategic Air Command.

sac

¹ American  

[sak] / sæk /

noun

• sacs
  plural

1. a baglike structure in an animal, plant, or fungus, as one containing fluid.

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Sac ² American  

[sak, sawk] / sæk, sɔk /

noun

• Sacs,
  plural
• Sac
  plural

1. Sauk.

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SAC ³ American  

[sak] / sæk /

Or S.A.C.

noun

1. Strategic Air Command.

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sac ¹ British  

/ sæk /

noun

1. a pouch, bag, or pouchlike part in an animal or plant

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SAC ² British  

abbreviation

1. Special Area of Conservation

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sac Scientific  

/ săk /

1. A pouch or pouch-shaped structure in an animal or plant, often containing liquids. The human bladder is a sac.

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Other Word Forms

Derived Forms

• saclike
  adjective

Inflected Forms

Nouns

• Sac
  plural
• Sacs
  plural
• sacs
  plural

Etymology

Origin of sac

First recorded in 1735–45; from Latin saccus “bag, sackcloth”; see sack ¹

Explanation

A sac is a hollow space or container. While any pocket or pouch can be called a sac, the word usually refers to a small enclosed space that occurs in nature, like a spider's egg sac or a squid's ink sac. You might put your groceries in a sack, but without the “k” a sac is smaller and attached to a plant or animal. Human fetuses grow inside an amniotic sac, and seed plants produce pollen inside sacs as well. Since the mid-1700s, sac has been used to mean "biological pocket," from the Latin root word saccus, or "bag." If you’re not sure which sac to use, it’s almost always the other one unless you’re in biology class.

Example Sentences

See Examples For:

sac Sac SAC Sacs sacs

Froome's wife later said doctors discovered a pericardial rupture - an injury where the sac that surrounds the heart is torn - during surgery and were able to repair it.

From BBC ● Jul. 3, 2026

In a dark room, a doctor pointed to an hourglass shape glowing on the ultrasound screen: There was her amniotic sac, funneling into her dilated cervix, and there was their tiny daughter’s foot, dipping out.

From Salon ● May 27, 2026

Then came the worst part: I passed the amniotic sac.

From The Wall Street Journal ● May 13, 2026

In these cases, the sheer size of the cell and the presence of a large yolk sac prevent the actin ring from fully closing.

From Science Daily ● Feb. 28, 2026

Suddenly he had an idea—he thought of the egg sac and the five hundred and fourteen little spiders that would hatch in the spring.

From "Charlotte's Web" by E.B. White

Now, Sac City sports 70 blooming creations, including entries from the Red Hats women’s group, the sheriff’s office—and the police.

From The Wall Street Journal ● Nov. 26, 2025

"We've got to flush this one down the toilet and get ready for Sac," said Kerr, whose side face the Sacramento Kings in their next match.

From BBC ● Jan. 21, 2025

Boys and girls cross country qualify for CIF Finals next Saturday at My Sac.

From Los Angeles Times ● Nov. 17, 2024

Sac State knocked out top-seeded Eastern Washington after beating No. 9 seed Idaho in the first round.

From Seattle Times ● Mar. 11, 2024

I see their faces -Greasy Sac and Madge and even the Peacekeepers who buy my meat cheering for us.

From "The Hunger Games" by Suzanne Collins

Defra says it may not be necessary to make this area of maerl beds an SAC, "nor is there a requirement, to protect all examples of a species or habitats."

From BBC ● Jul. 31, 2026

He was ecstatic when he got his Mount SAC financial aid letter and saw that state grants and fee waivers would cover the entire cost of his nursing program aside from books.

From Los Angeles Times ● Oct. 6, 2025

Mateo was rejected three times by Mount SAC before winning admission.

From Los Angeles Times ● Oct. 6, 2025

The situation has already led to limits being placed on housebuilding along SAC rivers.

From BBC ● Jun. 24, 2025

The darkened space was lit mainly by the Big Board—a massive wall of screens displaying maps plotting the positions of SAC planes and enemy forces.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

The Sacs and Fox mined and smelted 60 tons of lead for Shreve.

From Time Magazine Archive

Black Hawk came, and with him a host of tributary chiefs—Shawnees, Blackfeet, Sacs and Foxes, etc.

From Adventures Among the Red Indians Romantic Incidents and Perils Amongst the Indians of North and South America by H. W. G. Hyrst

A Mexican by birth, and interpreter for the Sacs and Foxes since 1858.

From Descriptive Catalogue of Photographs of North American Indians by W. H. Jackson

This expedition appears to have been followed by others, until the Foxes, with the allied Sacs, fled the valley, never to return.

From Historic Waterways?Six Hundred Miles of Canoeing Down the Rock, Fox, and Wisconsin Rivers by Reuben Gold Thwaites

Here and there along the river were seen small bands of Indians, and in due time the village of the Sacs was reached at the head of the Des Moines rapids.

From Explorers and Travellers by Adolphus W. Greely

The sacs survived pressures equal to those found at depths of more than 400 meters, which is far deeper than the larvae normally travel during their daily migration.

From Science Daily ● Jul. 27, 2026

When the researchers examined the larvae, they discovered that the insects had adapted part of their respiratory system into two pairs of small air sacs.

From Science Daily ● Jul. 27, 2026

Caitlin and Grace had been believed to be fraternal twins because they developed in different amniotic sacs, but doctors found their markers were exactly the same while assessing Grace as a potential stem cell donor.

From BBC ● Jul. 1, 2026

In another chapter, Mr. Haskell follows the path of an owlet moth into the cranefly orchid’s flower and lets us watch how sacs of pollen attach themselves to the insect’s eye.

From The Wall Street Journal ● Apr. 17, 2026

They’re the most elaborate ones I’ve done yet: divided thoroughfares, alleys, cul de sacs, tunnels, toll plazas, and traffic circles.

From "It’s Kind of a Funny Story" by Ned Vizzini

Related Words

• cyst