sac

1 of 4

noun

ˈsak 

: a pouch within an animal or plant often containing a fluid

a synovial sac

saclike

ˈsak-ˌlīk 

adjective

sac

2 of 4

abbreviation (1)

sacrifice

Sac

3 of 4

variant of sauk

SAC

4 of 4

abbreviation

1

special agent in charge

2

Strategic Air Command

Examples of sac in a Sentence

Recent Examples on the Web

Noun

Follicle Stretching Each egg in your ovary is surrounded by a sac called a follicle.5 As ovulation draws near, the follicle must stretch in preparation for releasing an egg. —Wendy Wisner, Health, 21 Sep. 2024

An epidural block is injected into the space outside the sac (epidural space), while a spinal block is injected directly into the fluid sac. —Femi Aremu, Verywell Health, 10 Sep. 2024

However, one of the team members saw a hanging egg sac in the entrance to a small cave. —Laura Baisas, Popular Science, 17 July 2024

It was called a tubal pregnancy, where the embryonic sac ruptured in my one fallopian tube. —Brianne Tracy, Peoplemag, 4 Sep. 2024

Word History

Etymology

Noun

French, literally, bag, from Latin saccus — more at sack

First Known Use

Noun

1741, in the meaning defined above

Phrases Containing sac

• air sac
• amniotic sac
• cul-de-sac
• embryo sac
• honey sac
• pollen sac
• sac bunt
• sac fly
• sac fungus
• yolk sac

Kids Definition

sac

noun

ˈsak

: a pouch in an animal or plant often containing a fluid

a food-storage sac

saclike

-ˌlīk

adjective

Medical Definition

sac

noun

ˈsak 

: 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