: 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
Nicole Villalpando, Austin American Statesman, 2 July 2025
These sacs, which can contain as many as 50 babies, have also been disturbed by visitors.
—Lauren Liebhaber, Miami Herald, 18 June 2025
Water also reaches buildings near the creek along Antioch Road West 106th Circle and El Monte cul de sac.
—Kansas City Star Weather Bot, Kansas City Star, 17 July 2025
Blackberries are such jovial fruit, their tiny juice sacs pleading for pearly whites to burst them into juice.
—Cathy Thomas, Oc Register, 28 May 2025
See All Example Sentences for sac
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Noun
Non-identical twins come from two different eggs and will have two sacs and two placentas; identical twins come from the same egg, but most develop separate placentas and amniotic sacs for each baby.
—Nicole Villalpando, Austin American Statesman, 2 July 2025
These sacs, which can contain as many as 50 babies, have also been disturbed by visitors.
—Lauren Liebhaber, Miami Herald, 18 June 2025
Water also reaches buildings near the creek along Antioch Road West 106th Circle and El Monte cul de sac.
—Kansas City Star Weather Bot, Kansas City Star, 17 July 2025
Blackberries are such jovial fruit, their tiny juice sacs pleading for pearly whites to burst them into juice.
—Cathy Thomas, Oc Register, 28 May 2025
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 Aug. 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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