seal Definition in the Cambridge English Dictionary
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Definition of “seal” - English Dictionary

Definition of "seal" - American English Dictionary

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sealnoun [C]

 us   /sil/

seal noun [C] (ANIMAL)

a ​large, fish-eating ​mammal that has very ​thickfur and ​lives in the ​sea: Seals are sometimes ​hunted for ​theirvaluablefur.

seal noun [C] (OFFICIAL MARK)

an ​officialmark on a ​document which ​shows that it is ​legal or ​actually what it ​claims to be: Diplomas are ​stamped with the ​state seal. A seal of ​approvalmeans that something has been ​proven to be good or is very ​pleasing: My brother’s ​girlfriend got my mom’s seal of ​approval.

seal noun [C] (COVERING)

anything that ​prevents the ​escape of ​liquid or ​gas from a ​container or ​pipe: The ​oil seal ​broke, and all the ​oilleaked from the ​engine. Don’t use that ​jar of ​babyfood if the seal is ​broken.

sealverb [T]

 us   /sil/

seal verb [T] (CLOSE)

to ​close a ​container or ​opening, or to ​prevent the ​escape of a ​liquid or ​gas from something: Rubber seals ​jarstightly. He sealed the ​envelope and put a ​stamp on it. [M] Broiling with high ​heat seals in the ​flavor of the ​meat. [M] The ​police sealed off the ​area (= ​preventedpeople from ​entering it). If ​officialdocuments are sealed, they cannot be ​seen or are not ​available to the ​public.

seal verb [T] (APPROVE)

to ​formallyapprove an ​agreement: They sealed the ​agreement with ​theirsignatures.
(Definition of seal from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "seal" - British English Dictionary

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sealnoun [C]

uk   us   /siːl/

seal noun [C] (ANIMAL)

B2 a ​largemammal that ​eatsfish and ​livespartly in the ​sea and ​partly on ​land or ​ice
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seal noun [C] (COVERING)

something ​fixed around the ​edge of an ​opening to ​preventliquid or ​gasflowing through it: Clean the seal on/around the ​fridgedoorregularly so that it ​remainsairtight. a ​thinpiece of ​material such as ​paper or ​plastic that ​covers the ​opening of a ​container and has to be ​broken in ​order to ​open the ​container and use the ​contents

seal noun [C] (MARK)

an ​officialmark on a ​document, sometimes made with wax, that ​shows that it is ​legal or has been ​officiallyapproved: The ​lawyerstamped the ​certificate with her seal.

sealverb [T]

uk   us   /siːl/

seal verb [T] (COVERING)

C2 to ​close an ​entrance or ​container so that nothing can ​enter or ​leave it to ​cover a ​surface with a ​specialliquid to ​protect it: This ​floor has just been sealed (withvarnish), so don't ​walk on it!C2 to ​close a ​letter or ​parcel by ​sticking the ​edges together: Seal the ​package (up) with ​tape. He sealed (down) the envelope and put a ​stamp on it.
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seal verb [T] (MARK)

to make an ​agreement more ​certain or to ​approve it ​formally: The two ​leaders sealed ​theiragreement with a ​handshake.
(Definition of seal from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

Definition of "seal" - Business English Dictionary

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sealnoun [C]

uk   us   /siːl/
an ​officialmark on a ​document, sometimes made with wax, that ​shows that it is ​legal or has been ​officiallyapproved: The ​documents were ​marked with the official seal.
a ​thinpiece of ​paper or ​plastic that ​covers the ​opening of a ​container and has to be ​broken before the ​contents can be used: The seal on the bottle was ​broken.
something ​fixed around the ​edge of an ​opening to prevent ​liquid or ​gasflowing through it: A ​video showed cracked seals and ​leaking water inside the coal mine.
under seal LAW if something is under seal, it cannot be seen, ​copied, or taken away: His ​file is ​currently under seal.
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sealverb [T]

uk   us   /siːl/
to make an ​agreement more ​certain or to ​approve it ​formally: seal sth with sth The ​loans are typically sealed with ​handshakes.
to ​close an ​entrance or ​container so that nothing can ​enter or ​leave it: The doors are sealed.
to ​cover a surface with a ​specialliquid in ​order to ​protect it: seal sth with sth The ​office floors were sealed with varnish.
to ​close a ​letter or ​parcel by ​sticking the edges together: seal down sth Seal down the ​envelope.
(Definition of seal from the Cambridge Business English Dictionary © Cambridge University Press)
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“seal” in Business English

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