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sac

sac

25 4.8
A small hollow bag in animals and plants that holds fluid or air
  • noun
  • /sæk/
  • Specialized
translation icon : saco
  • This allows air to be drawn in, inflating the alveoli, millions of small sacs inside our lungs.
  • endolymphatic sac
  • yolk sac
  • lacrimal sac

A nasal SAC sits on the nose.

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Examples

  • During the dissection, we observed a small fluid-filled sac within the animal's body.

  • The testes are located in a sac known as the scrotum.

    Academic text (2011)
  • So, I need you to help me take her egg sac with us.

  • Like your basic egg sac.

  • See... here... right here's the sac that contains the brain.

  • The mother octopus kept the egg sac clean so that water could filter through.

    Fiction book (1997)
  • During surgery, when a tear in the dural sac is noted, repair of the tear is attempted.

    Academic text (2005)
  • So when we inhale, these little sacs in our lungs fill up and our lungs expand.

  • One thing to remember is that the heart is constrained by a stiff fibrous SAC called the pericardium.

  • In this arrangement, hatched fish eggs, or sac fry, are reared in nursery ponds.

    Academic text (2003)

Synonyms

pocket
vssac
78 5.5

A small hollow space inside a rock or object that can hold other material

is a biological hollow baglike structure usually holding fluid or air
pouch
vssac
  • Specialized
15 4.6

A sac on an animal's body for holding young or food

is the general hollow bag not limited to a carrying function
vesicle
vssac
  • Specialized
3 7.9

A small sac in living things that holds fluid

is a more general hollow baglike structure often larger and in plants too

Compounds

21 4.7

A short street closed at one end with no through traffic

amniotic sac
  • Specialized
1 4.4

A thin bag that surrounds and protects a developing baby in the womb

pericardial sac
  • Specialized
1 6.7

A thin bag with two layers that surrounds and protects the heart

yolk sac
  • Specialized
1 7.4

A thin bag in animal embryos that holds the yolk, gives food, and helps make blood

air sac
  • Specialized
6.3

A thin part of an insect's breathing tubes that holds air and helps it breathe

air sac
  • Specialized
4.0

A thin sac in birds and some other animals that holds air and helps them breathe

lacrimal sac
  • Specialized
7.5

A small pouch at the inner corner of the eye that collects tears before they go to the nose

8.0

The main space inside the belly around the stomach and intestines

sac fungus
  • Specialized
7.9

A fungus that makes spores inside a small bag, like yeast or morels

tear sac
  • Specialized
7.2

A small pouch near the inner corner of the eye that collects tears before they drain into the nose

spore sac
  • Specialized
8.0

A small baglike part on ferns and fungi that holds tiny cells that grow into new plants

vitelline sac
  • Specialized
9.9

A thin bag in early embryos that carries blood and nutrients before the heart works

How Big

bladder
118 3.1
sac
  • Specialized
25 4.8
pouch
72 2.1
vesicle
  • Specialized
3 7.9

Surface Forms

sac singular
sacs plural

Etymology

Sac comes from the old Latin word saccus, which means 'bag', and is the same root as the English word sack. So a sac in animals or plants is like a small bag that holds fluid, air, or other material.