seal (redirected from Hermetic seal)

seal,

n 1. something that firmly closes or secures.
2. a tight and perfect closure.
v 3. to keep shut, enclosed, or confined.

seal, border,

n See border seal.

seal, double,

n a seal consisting of gutta-percha underneath another material such as temporary cement; used to close the coronal opening in a tooth during endodontic treatment.

seal, hermetic,

n perfect and absolute obliteration of all space within a tooth.

seal, peripheral,

n See border seal.

seal, posterior palatal,

n the seal at the posterior border of a denture produced by displacing some of the soft tissue covering the palate by extra pressure developed in the impression or by scraping a groove along the posterior seal area in the cast on which the denture is to be processed.

seal, postpalatal,

n See seal, posterior palatal.

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seal

1. a marine mammal; member of the suborder Pinnipedia. There are two major groups, the earless seals (family Phocidae) including many species, and the eared seals (family Otariidae) including sealions and fur seals. They are carnivorous and have four paddles which enable them to move on land and to swim.

2. a very dark brown coat color of cats, seen in brown (or sable) Burmese and on the extremities of seal-point Siamese and Colorpoint cats.

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seal pox

see sealpox.

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SEAL Heart surgery A clinical trial–Simple & Effective Arterial Closure Study which evaluated the safety and efficacy of the Duett^™ vascular sealing device

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seal Public health Any air- and/or water-tight closure on a product–blood components, medications intended to maintain a product sterilely until used by a consumer; products with broken seals should be discarded