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pair

(pār),
Two objects considered together because of similarity, for a common purpose, or because of some attracting force between them.

pair

(par)
1. a combination of two related, similar, or identical entities or objects.
2. in cardiology, two successive premature beats, particularly two ventricular premature complexes.

base pair  either of the two pairs—guanine and cytosine, adenine and thymine —of purine-pyrimidine bases joined by hydrogen bonds that make up DNA.

pair

1 two corresponding items similar in form and function.
2 one object composed of two joined interdependent parts. See also base pair.

pair

(par)
Two of anything similar in shape, size, and conformation.

base pair

In the double-stranded helical arrangement of DNA, the complementary purine-pyrimidine nucleotide bases (adenine-thymidine or guanine-cytosine) that are linked by weak chemical bonds. The order of these base pairs encode the genetic information in each segment of DNA.

ion pair

Two particles of opposite charge, usually an electron and a proton.
References in periodicals archive ?
In addition, industry incumbents are being placed under unwelcome pressure as the value chain re-organises itself to accommodate the record labels, who are currently pairing off with mobile operators in a de-facto content-distribution alliance.
The success follows a five-year project to coax ospreys into pairing off at Rutland Water nature reserve.
Inspired by Bergman's film ``Smiles of a Summer Night,'' ``A Little Night Music'' sees a number of couples pairing off in 19th-century Sweden.