: 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
Max Inchausti, Field & Stream, 22 May 2024
In 2021, researchers described a 99-million-year-old spider that was preserved with an egg sac filled with spiderlings.
—Riley Black, Smithsonian Magazine, 13 May 2024
Follicles are the small sacs that surround the eggs.
—Life Kit, NPR, 9 May 2024
Our first transfer resulted in an empty sac pregnancy.
—Amy Haneline, USA TODAY, 5 May 2024
His genitals would be heavy yet flaccid, fleshy skin sacs reddened with indignation, like the wattles of an angry turkey.
—Joyce Carol Oates, The New Yorker, 15 Apr. 2024
In those tips is a specialized sac, a cnidosac, where the undigested nematocysts are stored.
—Helen Sullivan, Smithsonian Magazine, 2 Apr. 2024
Otis gets another ultrasound to confirm once more that there are two sacs on screen.
—Hannah Sacks, Peoplemag, 5 Mar. 2024
Holding their wings tightly against their sides, the males make a swishing sound as the stiff breast feathers rub against the wings and the sac heaves up and down.
—Phil Bourjaily, Field & Stream, 11 Jan. 2024
Noun
Use egg sacs, bead rigs, or egg flies to consistently fool these fish and hold on for when a big fish takes.
—Max Inchausti, Field & Stream, 22 May 2024
In 2021, researchers described a 99-million-year-old spider that was preserved with an egg sac filled with spiderlings.
—Riley Black, Smithsonian Magazine, 13 May 2024
Follicles are the small sacs that surround the eggs.
—Life Kit, NPR, 9 May 2024
Our first transfer resulted in an empty sac pregnancy.
—Amy Haneline, USA TODAY, 5 May 2024
His genitals would be heavy yet flaccid, fleshy skin sacs reddened with indignation, like the wattles of an angry turkey.
—Joyce Carol Oates, The New Yorker, 15 Apr. 2024
In those tips is a specialized sac, a cnidosac, where the undigested nematocysts are stored.
—Helen Sullivan, Smithsonian Magazine, 2 Apr. 2024
Otis gets another ultrasound to confirm once more that there are two sacs on screen.
—Hannah Sacks, Peoplemag, 5 Mar. 2024
Holding their wings tightly against their sides, the males make a swishing sound as the stiff breast feathers rub against the wings and the sac heaves up and down.
—Phil Bourjaily, Field & Stream, 11 Jan. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sac.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near sac
Cite this Entry
“Sac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sac. Accessed 28 May. 2024.
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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