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seal

seal

73 3.7
A material that closes something tightly to keep out air or water
  • noun
  • /siːl/
translation icon : junta
  • The seal must have ruptured when we submerged.
  • achieve a seal
  • mechanical seal
  • pressure seal

I've got a couple chest seals, gauze.

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Examples

  • And you can make a gas tight seal with this adhesive on plastics like this.

  • The jar came with a plastic seal that keeps its contents fresh for a long time.

  • A heat seal could work with enough power.

  • Okay, how good is the seal?

  • In normal operation, a small amount of oil passes by the seal into the chamber.

    Academic text (1993)
  • All of this is covered with a seal of oil to keep it from rusting.

  • Double-lined with a vacuum seal to keep your cold stuff cold and your hot stuff hot.

  • The fluid leaves the seal via an outlet port and flows back into the tank.

    Academic text (1999)
  • The dump valve on the holding tank and two water tight seals leading to the exterior of the fuselage.

  • The interface between the two rings establishes the seal, preventing the process fluid from leaking.

    Academic text (1999)

Synonyms

gasket
vsseal
  • Specialized
26 5.5

A flat piece of material placed between two parts to stop leaks

is not limited to mechanical rings and includes coatings and devices
sealant
vsseal
  • Specialized
11 4.2

A material used on joints and cracks to stop water getting through

is more general, also naming devices that close or protect surfaces
caulking
vsseal
  • Specialized
6 5.8

A waterproof material that fills gaps around windows or bathtubs to stop water entering

covers many uses, not only building joint filling
sealer
vsseal
  • Specialized
2 5.0

A clear liquid that makes a surface hard and protects it before painting

is used for closing or protecting surfaces and devices beyond surface prep
sealing wax
vsseal
1 7.7

A soft material warmed to close letters that breaks when opened

applies generally to closures or protective coatings for surfaces and joints
sealing material
vsseal
  • Specialized
3.4

A substance that fills cracks and gaps to stop leaks of water or air

is broader, covering materials, devices, and coatings that close or protect

Compounds

Navy SEAL
  • Formal
52 4.4

A member of a top United States Navy unit trained for special sea, air, and land missions

An official stamp shows a person in charge thinks something is good

A very large seal with a nose like an elephant's trunk that lives on beaches

great seal
  • Formal
2 7.5

An official stamp used by a government to show that a document is genuine

1 4.1

A large seal with visible ears and thick fur that lives in cold seas

1 5.4

A large Arctic seal with dark curved marks on its back and white newborn pups

1 3.9

A small spotted seal that lives along coasts in the Northern Hemisphere

1 6.8

A medium-sized Arctic animal that lives in the sea with long whiskers used to find food under ice

1 9.9

A senior UK government official who has an old title, no set duties, and sometimes has extra responsibilities

golden seal
  • Specialized
1 8.4

A plant with a thick yellow root used in herbal medicine

An official seal used to show a United States government document is real

hudson seal
  • Archaic
1 9.9

Fur from a muskrat that is dyed to look like seal fur

break seal
  • Specialized
6.1

A seal that breaks when a package is opened to show if someone opened it

3.8

A small, spotted sea animal that lives on cold northern coasts

9.9

A formal written agreement signed with a special stamp that has stronger force in law

A silvery-grey seal that lives in Antarctica and eats krill

A silvery grey seal from Antarctica that eats mainly small sea animals with shells

A sea mammal with visible ear flaps that walks on land, like sea lions and fur seals

earless seal
  • Specialized
7.7

A sea animal with no outside ear flaps and back flippers for swimming

A large sea mammal with thick fur that lives on the Pacific coast from Alaska to California

A forest plant with smooth leaves and small hanging green flowers

A seal with thick fur that lives on rocky Pacific coasts near California and Mexico

hair seal
  • Specialized
7.3

A sea animal with no outer ears, a stiff coat of hair, and back legs like flippers

7.7

A medium-sized seal in Arctic waters with a large inflatable bag on its nose

seal oil
  • Archaic
6.7

A yellowish liquid from seal fat that people use to make soap, treat leather, and burn in lamps

7.0

A ring with a carved top you press into wax to make a mark

9.8

A small underwater explosive fishermen use to scare seals from fishing areas

true seal
  • Specialized
6.5

A sea mammal without visible ears, with fur and back flippers for swimming

A six-pointed star made by two equal triangles used as a symbol of Judaism

A woodland plant with long curved stems, pairs of hanging green bell flowers and a thick root with round scars

How Airtight

vacuum chamber
  • Specialized
3 4.7
O-ring
  • Specialized
1 6.1
gasket
  • Specialized
26 5.5
seal
73 3.7
lid
133 1.0
cover
571 1.0

Surface Forms

seal singular
seals plural

Etymology

Seal meaning a material or device that closes something comes from the old habit of using a wax seal to shut a letter, so a 'seal' is anything that keeps air or water out.