| right-hearted | Having a right heart or disposition. Right"-heartedness. Source: Websters Dictionary (01 Mar 1998) |
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| right-to-left shunt | The passage of blood from the right side of the heart into the left (as through a septal defect), or from the pulmonary artery into the aorta (as through a patent ductus arteriosus); such a shunt can occur only when the pressure on the right side exceeds that in the left, as in advanced pulmonic stenosis, or when the pulmonary artery pressure exceeds aortic pressure, as in one form of Eisenmenger's syndrome or in tricuspid atresia. (05 Mar 2000) |
| righteousness | 1. The quality or state of being righteous; holiness; purity; uprightness; rectitude. Righteousness, as used in Scripture and theology, in which it chiefly occurs, is nearly equivalent to holiness, comprehending holy principles and affections of heart, and conformity of life to the divine law. 2. A righteous act, or righteous quality. "All our righteousnesses are as filthy rags." (Isa. Lxiv. 6) 3. The act or conduct of one who is righteous. "Blessed are they that keep judgment, and he that doeth rightness at all times." (Ps. Cvi. 3) 4. The state of being right with God; justification; the work of Christ, which is the ground justification. "There are two kinds of Christian righteousness: the one without us, which we have by imputation; the other in us, which consisteth of faith, hope, and charity, and other Christian virtues." (Hooker) "Only for the righteousness of Christ imputed to us, and received by faith alone." (Westminster Catechism) Synonym: Uprightness, holiness, godliness, equity, justice, rightfulness, integryty, honesty, faithfulness. Origin: AS. Rihtwisnes. Source: Websters Dictionary (01 Mar 1998) |
| righting reflexes | Reflex's which through various receptors, in labyrinth, eyes, muscles, or skin, tend to bring an animal's body into its normal position in space and which resist any force acting to put it into a false position, e.g., on its back. See: body righting reflexes, labyrinthine righting reflexes, neck reflexes, optical righting reflexes. Synonym: static reflexes. (05 Mar 2000) |
| rigid dysarthria | Dysarthria caused by lesions along the corticobulbar tracts. Synonym: rigid dysarthria. (05 Mar 2000) |
| rigidity | Stiffness or inflexibility, chiefly that which is abnormal or morbid, rigor. Origin: L. Rigiditas, rigidus = stiff (18 Nov 1997) |
| rigidulous | <botany> Somewhat rigid or stiff; as, a rigidulous bristle. Origin: Dim. From rigid. Source: Websters Dictionary (01 Mar 1998) |
| rigler sign | <radiology> Bowel wall outlined by air on inside and outside, indicates pneumoperitoneum (12 Dec 1998) |
| rigor | Stiffening of muscle as a result of high calcium levels and ATP depletion, so that actin myosin links are made, but not broken. (18 Nov 1997) |
| rigor mortis | Muscular rigidity which develops in the cadaver usually from 4 to 10 hours after death and lasts 3 or 4 days. (12 Dec 1998) |