: a pouch within an animal or plant often containing a fluid
a synovial sac
sacrifice
Sac
3 of 4variant of sauk
1
special agent in charge
2
Strategic Air Command
Examples of sac in a Sentence
Recent Examples on the Web
Edward Segarra, USA Today, 23 Apr. 2025
Only males exhibit vocal slits and sacs, used to call.
—Irene Wright, Miami Herald, 17 Mar. 2025
Any egg sacs spotted on the tree should be carefully removed with a paper towel or gloves.
—Josh Hammer, Newsweek, 23 Dec. 2024
Many frogs also have different types of vocal sacs, which come in lots of shapes, sizes and colors, and can amplify frog calls in different ways.
—Olivia Ferrari, Smithsonian Magazine, 21 Nov. 2024
See All Example Sentences for sac
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Noun
Ovarian cysts are sacs filled with fluid that attach to or inside an ovary, according to Mayo Clinic.
—Edward Segarra, USA Today, 23 Apr. 2025
Only males exhibit vocal slits and sacs, used to call.
—Irene Wright, Miami Herald, 17 Mar. 2025
Any egg sacs spotted on the tree should be carefully removed with a paper towel or gloves.
—Josh Hammer, Newsweek, 23 Dec. 2024
Many frogs also have different types of vocal sacs, which come in lots of shapes, sizes and colors, and can amplify frog calls in different ways.
—Olivia Ferrari, Smithsonian Magazine, 21 Nov. 2024
See All Example Sentences for sac
Cite this Entry
“Sac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sac. Accessed 6 May. 2025.
Copy CitationMedical Definition
sac
noun
: a soft-walled anatomical cavity usually having a narrow opening or none at all and often containing a special fluid
a synovial sac
see air sac, amniotic sac, dental sac, lacrimal sac
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