noun \ˈsēl\
plural seals also seal

Definition of SEAL

:  any of numerous carnivorous marine mammals (families Phocidae and Otariidae) that live chiefly in cold regions and have limbs modified into webbed flippers adapted primarily to swimming; especially :  a fur seal or hair seal as opposed to a sea lion
a :  the pelt of a fur seal
b :  leather made from the skin of a seal
:  a dark brown

Origin of SEAL

Middle English sele, from Old English seolh; akin to Old High German selah seal
First Known Use: before 12th century

Other Mammals Terms

dormouse, dugong, gibbon, grimalkin, sable, stoat, ungulate, vole


intransitive verb

Definition of SEAL

:  to hunt seals

First Known Use of SEAL


Other Hunting and Fishing Terms

chum, covert, creel, flense, pitfall, seine, skulk, spoor, trawl



Definition of SEAL

a :  something that confirms, ratifies, or makes secure :  guarantee, assurance
b (1) :  a device with a cut or raised emblem, symbol, or word used especially to certify a signature or authenticate a document
(2) :  a medallion or ring face bearing such a device incised so that it can be impressed on wax or moist clay; also :  a piece of wax or a wafer bearing such an impression
c :  an impression, device, or mark given the effect of a common-law seal by statute law or by American local custom recognized by judicial decision
d :  a usually ornamental adhesive stamp that may be used to close a letter or package; especially :  one given in a fund-raising campaign
a :  something that secures (as a wax seal on a document)
b :  a closure that must be broken to be opened and that thus reveals tampering
c (1) :  a tight and perfect closure (as against the passage of gas or water)
(2) :  a device to prevent the passage or return of gas or air into a pipe or container
:  a seal that is a symbol or mark of office
under seal
:  with an authenticating seal affixed

Origin of SEAL

Middle English sele, seel, from Anglo-French seal, sel, from Latin sigillum seal, from diminutive of signum sign, seal — more at sign
First Known Use: 13th century


transitive verb

Definition of SEAL

a :  to confirm or make secure by or as if by a seal <seal the deal>
b :  to solemnize for eternity (as a marriage) by a Mormon rite
a :  to set or affix an authenticating seal to; also :  authenticate, ratify
b :  to mark with a stamp or seal usually as an evidence of standard exactness, legal size, weight, or capacity, or merchantable quality
a :  to fasten with or as if with a seal to prevent tampering
b :  to close or make secure against access, leakage, or passage by a fastening or coating
c :  to fix in position or close breaks in with a filling (as of plaster)
:  to determine irrevocably or indisputably <that answer sealed our fate>

First Known Use of SEAL

14th century



Definition of SEAL

sea, air, land (team)

Other Military Terms

bivouac, logistics, petard, salient, sally, supernumerary, tactical


transitive verb \ˈsēl\   (Medical Dictionary)

Medical Definition of SEAL

:  to apply dental sealant to <the teeth to be sealed are surrounded by cotton rolls and dried thoroughly—J. W. Friedman>


Next Word in the Dictionary: sealablePrevious Word in the Dictionary: sea kittieAll Words Near: seal
May 28, 2015
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someone who writes fiction
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