airproof
Impervious to atmosphere
Airproof means impermeable to air—sealed so that air cannot pass through or escape.
The term applies to containers, packaging, or materials designed to maintain freshness or prevent contamination: an airproof seal on the jar.
Airtight is far more common in everyday usage.
Impenetrably closed off
- sealedClosed to prevent entry
- caulkWaterproof gap filler
- gasketMechanical leak preventer
- weatherstrippingMaterial sealing door gaps
o-ring · packing · stopper · plug · cork · bung · membrane · sleeve
Cannot be penetrated
- watertightPrevents liquid from passing
- imperviousUnable to be affected
- nonporousLacking absorbent openings
- tightFirmly stretched or fitting
sealed · leakproof · breathable · permeable
Flexible synthetic polymer
- epoxyCatalyst-cured bonding compound
- polyurethaneVersatile synthetic resin compound
- masticAromatic resin or adhesive
- puttyPliable sealing compound
sealant · adhesive · elastomer · foam · acrylic · rubber · neoprene · butyl
Confined, bordered space
- chamberEnclosed room or cavity
- vesselReceptacle for contents
- capsuleEnclosed dose container
- pouchSmall flexible bag
bag · canister · jar · envelope · casing · packaging · storage · preservation
Pertaining to warmth
- fiberglassReinforced woven strand composite
- polystyreneLightweight synthetic foam plastic
- cellulosePlant wall polysaccharide
- rockwoolFibrous stone-based insulation
hermetic
Impenetrably closed off
weatherstripping · o-ring · packing · stopper · plug · cork · bung · membrane · sleeve · flange
impermeable
Cannot be penetrated
- watertightPrevents liquid from passing
- imperviousUnable to be affected
- nonporousLacking absorbent openings
tight · sealed · leakproof · breathable · permeable
silicone
Flexible synthetic polymer
- epoxyCatalyst-cured bonding compound
- polyurethaneVersatile synthetic resin compound
- masticAromatic resin or adhesive
putty · sealant · adhesive · elastomer · foam · acrylic · rubber · neoprene · butyl · latex
enclosure
Confined, bordered space
pouch · bag · canister · jar · envelope · casing · packaging · storage · preservation
thermal
Pertaining to warmth
- fiberglassReinforced woven strand composite
- polystyreneLightweight synthetic foam plastic
- cellulosePlant wall polysaccharide
airproofporous
Allowing passage of fluids
permeable · breathable · leaky · ventilated · unsealed
air, proof, airy, waterproof, airtight, foolproof, tamper-proof, soundproof, airiness