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Etymology: L, duplus
twice as much in strength, size, or amount.


(dŭb′l) [L. duplus, twofold]
Duplicate, or combining two qualities.


two of them.

double burst stimulation
a technique of nerve stimulation in which two short tetanic stimuli are applied and the response pattern used to monitor neuromuscular blockade during anesthesia.
double cervix
see double cervix.
double diffusion precipitin test
double fleece
2 years' growth of wool.
double gee
double muscling
see myofiber hyperplasia.
double pregnancy
double reciprocal plot
a graphical technique for analyzing drug antagonisms by plotting the effect against the dose. Called also Lineweaver-Burk plot.
double scalp
palpable thinning of the cranial bones in young sheep on inadequate diet.
double-stranded (ds)
nucleic acid occurring as a two-strand helix.

Patient discussion about double

Q. what is the cause for double vision

A. Double vision, or diplopia, as it's called, may be due to many conditions, including disorders of the muscles of the eye (extra-ocular muscles) and the nerves controlling them, disorders of the eye ball (enlarged eyeball as in Graves' ), and sometimes disorders of vision.

Diplopia may manifest important conditions, so consulting a doctor (e.g. neurologist or ophthalmologist) may be wise.

You may read more here:

Q. I have fibromyalgia and am having terrible vision problems...double, blurred, feel off blance.Is this common?

A. Blurry vision is not a usual symptom in fibromyalgia. If you are experiencing this on a permenant basis you should see a doctor- either a neurologist or an ophthalmologist to rule out other vision conditions that might be causing this.

More discussions about double
References in periodicals archive ?
The loading procedure for the Wokingham, or indeed any of those huge- field sprint handicaps, is invariably a nightmare for jockeys and everyone down at the start because of the sheer mechanics of getting so many horses installed in double-quick time.
Spitfire is the star employee of an adventure holiday company in Colorado - one of a team of carrier pigeons who fly a photographer's memory chips down the Rockies so that tourists can get speedy photos of their white-water rafting expeditions in double-quick time.
In true Emmanuelle fashion, Arsenal eased themselves out of two cups in double-quick time, and with their European hopes looking naked too it's no wonder Hills make them 1-50 to win sod all (another phrase plucked straight from the Emmanuelle textbook).
He's a keen horse who wants to do everything in double-quick time and the idea was to settle him in today.
The German, 6-4 underdog, told the world on his internet blog he had to get his Haas out of there in double-quick time to catch an 11pm flight from New York to Dubai where, just for turning up to play, you get the kind of dosh the Richard and Judy Show has "conned" from viewers.
So that's this fixture sussed in double-quick time.
And magistrate Mark Hamill got the message in double-quick time.
IF Tim Henman displays the killer instinct he showed against Fernando Vicente in the US Open first round , then he will wrap up his second-round encounter with another Fernando, qualifier Gonzalez, in double-quick time today, writes Paul Kealy.
Surgeon William Wallace - who shares a name with Braveheart himself - did the job which helped Wayne Rooney's broken foot recover in double-quick time.
Coral's 20-1 was snapped up double-quick yesterday.
JENSON BUTTON vowed to celebrate his new pounds 12million deal in double-quick time by sweeping up some silverware in Sunday's Brazilian Grand Prix.
THERE were fears of having to resort to a bowl-out in the 27th and last Benson and Hedges Cup final at Lord's but the sponsors need not have worried about the British weather as Essex made sure of victory in double-quick time yesterday.