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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 ?
This multi-function product for digital radio and K-band sat-com applications features an integrated LO doubler and output post amplifier, providing 13 dB typical conversion gain across the 17-27 GHz RF band, with single-ended signal ports and integrated RF, LO and IF baluns.
Wales: M Cannon (Hemel); R Pepperill (Coventry), S Williams (Cardiff), L Doubler (Hemel), B Kerr (Teesside); G Hatherway (Hemel), S O'Kelly (Swansea); G Hughes (Uwic), G Honor (Uwic), A Loxton (Cardiff), G Morgan (Uwic/Cardiff), D Jenkins (Loughborough), R Singleton (Uwic/Cardiff).
There was better news for Doubler in the Open Singles as the Welsh skip moved into the semi-finals with a confident victory over Merthyr's Liam Stone (21-13), where he will now face Swansea's Robert Chisholm, current holder of the Champions All title.
Last 16: P Rowlands (Cardiff) 21, bt S Rees (Port Talbot) 20; C Lewis (Radnorshire) 21, bt D Doubler (Cardiff) 19; E Williams (Earlswood) 20, lost to N Williams (Swansea) 21; C Bronham (Heatherton) 4, lost to L Davies (Earlswood) 21; J Williams (Swansea) 21, bt C Latham (Port Talbot) 12; J Greenslade (Sully) 21, bt N Aldridge (Radnorshire) 17; G Wolfe (Earlswood) 8, lost to D Gough (Severn Valley) 21; R Thomas (Pembs) 12, lost to D Davies Jnr (Blaenau Gwent)) 21.
Doubler, Speed Doubler and Virtual PC are trademarks of Connectix
Open Triples: Damian Doubler, Mike Hart & Peter Greenwood (Penylan) v Ryan Mountstephen, Andy Oliver & Wayne Phillips (Penhill).
Runco was the first company to introduce and market a line doubler with a multi-frequency projector in 1990 and also introduced the first multiple-aspect-ratio controller, the ARC-IV, to the Home Theater market.
Organiser, Paul Doubler said: 'This side and that season deserve to be remembered and honoured and we are going to do that in some style.
Intel's Clock Doubler Chip and New Integrated Cache CPU Modules
reports success in using the Britelight(TM) laser with an OPOTEK doubler to increase bio-detection throughput.
With 48,000 in the crowd that night we have room for around one per cent of them to attend,' said event organiser Paul Doubler.