radially symmetrical
— Tillægsord
– Engelsk
～ having a symmetrical arrangement of radiating parts about a central point
radial symmetry
— Navneord
– Engelsk
～ the property of symmetry about an axis; "the starfish illustrates radial symmetry"
Reiter's syndrome
— Navneord
– Engelsk
～ an inflammatory syndrome (etiology unknown) predominantly in males; characterized by arthritis and conjunctivitis and urethritis
radiation syndrome
— Navneord
– Engelsk
～ syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation"
Ramsay Hunt syndrome
— Navneord
– Engelsk
～ syndrome resulting from infection by the herpes varicella zoster virus; characterized by vertigo and pain in the ears and facial nerve paralysis and sometimes hearing loss
Reye's syndrome
— Navneord
– Engelsk
～ acquired encephalopathy following acute viral infections (especially influenza or chicken pox) in young children; characterized by fever, vomiting, disorientation, coma, and fatty infiltration of the liver
restless legs syndrome
— Navneord
– Engelsk
～ feeling of uneasiness and restlessness in the legs after going to bed (sometimes causing insomnia); may be relieved temporarily by walking or moving the legs
respiratory distress syndrome
— Navneord
– Engelsk
～ an acute lung disease of the newborn (especially the premature newborn); lungs cannot expand because of a wetting agent is lacking; characterized by rapid shallow breathing and cyanosis and the formation of a glassy hyaline membrane over the alveoli
rating system
— Navneord
– Engelsk
～ a system of classifying according to quality or merit or amount
recording system
— Navneord
– Engelsk
～ audio system for recoding sound
receiving system
— Navneord
– Engelsk
～ set that receives radio or tv signals
railway system
— Navneord
– Engelsk
～ line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight
reticuloendothelial system
— Navneord
– Engelsk
～ a widely distributed system consisting of all the cells able to ingest bacteria or colloidal particles etc, except for certain white blood cells
reticular activating system
— Navneord
– Engelsk
～ the network in the reticular formation that serves an alerting or arousal function
refrigeration system
— Navneord
– Engelsk
～ a cooling system for chilling or freezing (usually for preservative purposes)
reference system
— Navneord
– Engelsk
～ a system that uses coordinates to establish position
root system
— Navneord
– Engelsk
～ a developed system of roots
reproductive system
— Navneord
– Engelsk
～ organs and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspring
respiratory system
— Navneord
– Engelsk
～ the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing