sac
Membrane-enclosed cavity
A sac is a pouch-like structure in a living organism, typically containing fluid or air: the amniotic sac, air sacs in the lungs.
The term appears in biology and medicine for any enclosed, bag-shaped cavity.
A sac differs from a sack—sac is anatomical, sack is for potatoes.
Of the embryo's sac
- placentaFetal nourishment organ
- yolkEgg's nutrient core
- vesicleSmall fluid-filled sac
- bladderOrgan holding urine
cyst · follicle · bursa · alveolus · capsule · membrane · embryonic · gestational
Flexible carrying container
- pouchSmall flexible bag
- pocketFabric compartment in clothing
- bladderOrgan holding urine
- receptacleContainer for items
membrane · enclosure · compartment · vessel · reservoir · capsule · casing · sheath
amniotic
Of the embryo's sac
bladder · cyst · follicle · bursa · alveolus · capsule · membrane · embryonic · gestational · chorion
bag
Flexible carrying container
receptacle · membrane · enclosure · compartment · vessel · reservoir · capsule · casing · sheath · envelope
pouch
Small flexible bag
possum · wombat · koala · bandicoot · quokka · opossum · bilby · marsupium · nursing · mammary
cell
Basic unit of life
- organelleSubcellular functional unit
- vacuoleCell's storage compartment
- endosomeMembrane sac for internalized cargo
lysosome · spore · pollen · ink · venom · silk · egg · larval · cocoon · chrysalis
- produits de consommationaliment, medicament, parfum, dentifrice, detergent
- sacspouch, bladder, vesicle, bursa, cyst
- body shapescavity, canal, lobe, duct, membrane
- Anglo-Saxon EnglandAnglo-Saxons, Anglo-Saxon, witenagemot, doom, Northumbria
- Trading Card Gamesbooster pack, creature, spell, artifact, enchantment
- giftsgift, gifts, present, presents, gift boxes
- hit the sackGo to sleep
- sacred ritesReligious ceremonial practices
- hitting the sackGoing to bed
- sacred landsTerritory with spiritual significance
- sacred songReligious musical composition
- sacred cowExempt from criticism
sack, sacred, sacrifice, saccharine, sacrament, sacrum, sacs, sacral