Dictionary » L » Lock



1. Anything that fastens; specifically, a fastening, as for a door, a lid, a trunk, a drawer, and the like, in which a bolt is moved by a key so as to hold or to release the thing fastened.

2. A fastening together or interlacing; a closing of one thing upon another; a state of being fixed or immovable. Albemarle Street closed by a lock of carriages. (De Quincey)

3. A place from which egress is prevented, as by a lock.

4. The barrier or works which confine the water of a stream or canal.

5. An inclosure in a canal with gates at each end, used in raising or lowering boats as they pass from one level to another; called also lift lock.

6. That part or apparatus of a firearm by which the charge is exploded; as, a matchlock, flintlock, percussion lock, etc.

7. A device for keeping a wheel from turning.

8. A grapple in wrestling. Detector lock, a lock containing a contrivance for showing whether it as has been tampered with. Lock bay, a range of bond stone. Mortise lock, a door lock inserted in a mortise. Rim lock, a lock fastened to the face of a door, thus differing from a mortise lock.

Origin: as. Loc inclosure, an inclosed place, the fastening of a door, fr. Lucan to lock, fasten; akin to os. Lukan (in comp), D. Luiken, OHG. Luhhan, Icel. Lka, goth. Lukan (in comp); cf. Skr. Ruj to break. Cf. Locket.

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Results from our forum


... GC content. Your primers have 43 percent GC content. However, since they are 21 bases in length, this should also be okay. (3) Should have a GC lock. 2 of 3 of the 3 prime bases should be G or C with the final 3 prime base G or C. The primers you have listed are AT rich along the 3 prime end. ...

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by DougB
Wed Apr 18, 2012 2:22 pm
Forum: Molecular Biology
Replies: 4
Views: 3835

Hair and DNA

If the lock was not washed/frequently brushed/otherwise cleaned, I think it is possible that some skin cells may have adhered to the hair and might remain - it seems like this hasn't been mentioned in the thread before. I also ...

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by AstraSequi
Fri Mar 30, 2012 3:37 am
Forum: Physiology
Topic: Hair and DNA
Replies: 31
Views: 70152

Re: Hair and DNA

OK just to get my head around this. There is no point in testing an old, cut lock of my missing sister's hair for identity purposes as it just proves who our mother is which can be done if she returns, at which point we might as well do a comparison nDNA of both ...

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by Acre74
Thu Mar 29, 2012 1:19 pm
Forum: Physiology
Topic: Hair and DNA
Replies: 31
Views: 70152

book recommendation

all in bold is basically like using CAPS LOCK http://demotywatory.com/242 go into your favourite library (yeah, I know, you have dozens of favourite libraries, but simply pick one) and search for books with key words like biochemistry, proteins, ...

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by JackBean
Mon Feb 13, 2012 5:58 pm
Forum: General Discussion
Topic: book recommendation
Replies: 4
Views: 4980

The Keyhole Paradox: Challenging universal common descent.

... This is the Keyhole Paradox, because an oversimplified way of explaining it is to imagine that, by random chance, both a key and the exact-fitting lock for the key would have to randomly appear through mutation, and besides the incredible unlikelihood for this mutation to occur, all other animals ...

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by irtree
Tue Feb 07, 2012 12:02 am
Forum: Evolution
Topic: The Keyhole Paradox: Challenging universal common descent.
Replies: 5
Views: 6635
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