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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 ?
My experience of doubleness, in-betweenness and being in me and in two is filled to overflowing with raw emotion--the undreamed fulfilment and love I feel as a mother to my blue-eyed Aboriginal boys, the deep shame and guilt which comes hand in hand with my subjectivity as a white woman and recipient of the spoils of colonialism, the knowledge I carry that my choice to marry and have children with an Aboriginal man is a transgression that my white race will never forgive, and the hope I hold for a humanity which dares to hold difference with love in their hands and their hearts.
Consider the example of doubleness, one of the central idioms of black cultural studies.
In Cullinan's short story "Commuting," where a young woman busses through once Irish neighborhood to downtown Manhattan, Fanning finds an example of "liberating doubleness.
Armstrong's reading of Howards End turns on the doubleness inherent in Forster's position as a closeted homosexual: he wants to belong to the larger community and at the same time is nervous about the homogeneity such belonging entails.
She overemphasizes the doubleness of Atwood's vision and the importance of genre in Atwood's writing, even going so far as (incorrectly) to label the novel as melodrama.
As Austerlitz deploys the concept, however, Du Boisian doubleness is actually tripleness: jazz is African American, American, and transnational.
The duplicity, or doubleness, of Capella was discovered spectroscopically back in 1899.
This doubleness is reciprocal, Gasarian explains: "Loin d'etre indifferent au reel, Breton voudrait que ses images surreelles s'y projettent, afin que les couleurs de la vie quotidienne en soient rehaussees" (123).
What I want to insist on here is that in both political and linguistic frames of reference it is not only the doubleness of the arbitrary--its signifying at once absolute determination and utter indeterminacy--that characterizes the problematic I am attempting to define.
Ochoa writes: "Unlike Gustavo Perez Firmat's 'life on the hyphen' or Arteaga's sign of the x, both signs of fusion, his sign seems to be the slash (/), a symbol of doubleness and juxtaposition" (175).
In her introduction, Jill Robbins links Rossetti to the neobarroque poetics and irony of the 1970s novisimos and also to the now-familiar tenets of postmodernism via Almodovar: destabilization of gender conventions, disruptions of the concept of authority, and identity as performance, doubleness, and parody.
As beings who seek to break out of the limits assigned to us by biology, history, and the forces of circumstance, we humans (like Antigone and Oedipus) seek to overcome the "strange and uncanny doubleness [that] haunts the relation of the human being to the city," even as it haunts our relations to ourselves and to other beings in our community.