Dictionary » S » Seal



1. To set or affix a seal to; hence, to authenticate; to confirm; to ratify; to establish; as, to seal a deed. And with my hand I seal my true heart's love. (Shak)

2. To mark with a stamp, as an evidence of standard exactness, legal size, or merchantable quality; as, to seal weights and measures; to seal silverware.

3. To fasten with a seal; to attach together with a wafer, wax, or other substance causing adhesion; as, to seal a letter.

4. Hence, to shut close; to keep close; to make fast; to keep secure or secret. Seal up your lips, and give no words but mum. (Shak)

5. To fix, as a piece of iron in a wall, with cement, plaster, or the like.

6. To close by means of a seal; as, to seal a drainpipe with water. See Seal.

7. Among the mormons, to confirm or set apart as a second or additional wife. If a man once married desires a second helpmate . . . She is sealed to him under the solemn sanction of the church. (H. Stansbury)

Origin: OE. Selen; cf. OF. Seeler, seieler, F. Sceller, LL. Sigillare. See Seal a stamp.

(Science: zoology) Any aquatic carnivorous mammal of the families Phocidae and Otariidae.

Seals inhabit seacoasts, and are found principally in the higher latitudes of both hemispheres. There are numerous species, bearing such popular names as sea lion, sea leopard, sea bear, or ursine seal, fur seal, and sea elephant. The bearded seal (Erignathus barbatus), the hooded seal (Cystophora crustata), and the ringed seal (phoca foetida), are northern species. See also eared seal, harp seal, and Fur seal, under Eared, Harp, monk, and Fur. Seals are much hunted for their skins and fur, and also for their oil, which in some species is very abundant.

(Science: zoology) harbor seal, the common seal (phoca vitulina). It inhabits both the North atlantic and the North Pacific ocean, and often ascends rivers.

Synonym: marbled seal, native seal, river seal, bay seal, land seal, sea calf, sea cat, sea dog, dotard, ranger, selchie, tangfish.

Origin: OE. Sele, AS. Seolh; akin to OHG. Selah, Dan. Sael, Sw. Sjal, Icel. Selr.

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Inserting cDNA into a retroviral vector?..

... double stranded cDNA into this vector? If yes, what are the processes that need to happen in order to make this occur? And can I use DNA ligase to seal the fragments of cDNA and retroviral vector?

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Sun Mar 10, 2013 1:43 pm
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Topic: Inserting cDNA into a retroviral vector?..
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Plant hormone experiment!

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Mon May 07, 2012 7:07 am
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Loss of genetic diversity

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Sun Apr 15, 2012 12:44 am
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Topic: Loss of genetic diversity
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Colony growth

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by sci2012
Sat Mar 10, 2012 9:43 pm
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Topic: Colony growth
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Just take some room, where you're sure nobody's going too often and which has no windows (or you can seal them), put in light with timing. The photoperiodism requires at least 12 hours long periods anyway... Hello, thank you for the reply So if I was doing photoperiodism ...

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by Lysis
Mon Feb 13, 2012 10:48 am
Forum: Botany Discussion
Topic: Investigation into aspect of plant physiology
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