coupling

coupling
1. Usually the result of the repeated pairing of a normal sinus beat with a ventricular extrasystole. 2. See c. phase. 3. A condition in which one or more products of a reaction are the subsequent reactants (or substrates) of a second reaction.
- constant c. SYN: fixed c..
- fixed c. where several premature beats are seen, the interval between each of them and the preceding normal beat is constant. SYN: constant c..
- variable c. where several extrasystoles are seen, the interval between each of them and the preceding sinus beat varies.

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cou·pling 'kəp-liŋ, -ə-liŋ n
1) the joint together with its supporting structures between the last lumbar vertebra and the sacrum that joins the hindquarters of a quadruped to the trunk broadly the part of the body or the conformation and proportionate length of the part of the body that joins the hindquarters to the forequarters
2) the tendency of linked traits to be inherited together in offspring of a double heterozygote when both dominant genes occur on one chromosome and both recessive genes occur on the homologous chromosome compare REPULSION
3) BIGEMINY

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coup·ling (kupґling) 1. the joining together of two things. 2. in genetics, the occurrence on the same chromosome in a double heterozygote of the two mutant alleles of interest. Cf. repulsion. 3. in cardiology, the serial occurrence of a normal heart beat followed closely by a premature beat.

Medical dictionary. 2011.

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Look at other dictionaries:

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  • Coupling — This article is about a mechanical connection between two objects. For other uses, see Coupling (disambiguation). Rotating coupling A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power.… …   Wikipedia

  • coupling — A connecting device used between two objects so motion of one will be imparted to the other; it may be mechanical, hydraulic, or electrical. Also see doughnut coupling föttinger coupling flexible coupling fluid coupling foettinger coupling guibo… …   Dictionary of automotive terms

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  • coupling — [[t]kʌ̱plɪŋ[/t]] couplings 1) N COUNT: oft supp N A coupling is a device which is used to join two vehicles or pieces of equipment together. Before driving away, re check the trailer coupling. 2) N COUNT: usu sing, usu N of pl n When two… …   English dictionary

  • Coupling — Six Sexy Six Sexy Titre original Coupling Genre Sitcom Créateur(s) Steven Moffat Production Sue Vertue Pays d’origine  Royaume Uni Chaîne d’origine …   Wikipédia en Français

  • coupling — UK [ˈkʌp(ə)lɪŋ] / US noun Word forms coupling : singular coupling plural couplings 1) a) [countable] an object used for joining two things together b) [usually singular] a combination of two things 2) [countable/uncountable] literary sexual… …   English dictionary

  • Coupling — Couple Cou ple, v. t. [imp. & p. p. {Coupled} (k[u^]p ld); p. pr. & vb. n. {Coupling} (k[u^]p l[i^]ng).] [F. coupler, fr. L. copulare. See {Couple}, n., and cf. {Copulate}, {Cobble}, v.] [1913 Webster] 1. To link or tie, as one thing to another;… …   The Collaborative International Dictionary of English

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