Richard Upjohn
— Noun
– English
～ United States architect (born in England) (1802-1878)
re-uptake
— Noun
– English
～ a process of using up or consuming again; "psychopharmacologists discovered that amine reuptake is a process that inactivates monoamine neurotransmitters"
radioactive iodine uptake test
— Noun
– English
～ radioactive iodine test that measures the amount of radioactive iodine taken up by the thyroid gland
Rubus ursinus
— Noun
– English
～ American blackberry with oblong black fruit
round ligament of the uterus
— Noun
– English
～ ligament attached to the uterus on either side in front of and below the opening of the Fallopian tube and passing through the inguinal canal to the labia majora
Ribes uva-crispa
— Noun
– English
～ spiny Eurasian shrub having greenish purple-tinged flowers and ovoid yellow-green or red-purple berries
Republic of Uzbekistan
— Noun
– English
～ a landlocked republic in west central Asia; formerly an Asian soviet
ring vaccination
— Noun
– English
～ administering vaccine only to people in close contact with an isolated infected patient; prevents the spread of a highly infectious disease by surrounding the patient with a ring of immunization
red valerian
— Noun
– English
～ European herb with small fragrant crimson or white spurred flowers
Rift Valley fever
— Noun
– English
～ an infection common in Africa caused by a bunyavirus; transmitted by mosquitoes or by handling infected animals
rift valley
— Noun
– English
～ a valley with steep sides; formed by a rift in the earth's crust
Ruhr Valley
— Noun
– English
～ a major industrial and coal mining region in the valley of the Ruhr river in northwestern Germany
relief valve
— Noun
– English
～ a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level
rectifying valve
— Noun
– English
～ a thermionic tube having two electrodes; used as a rectifier
right atrioventricular valve
— Noun
– English
～ valve with three cusps; situated between the right atrium and the right ventricle; allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts
Rembrandt van Ryn
— Noun
– English
～ influential Dutch artist (1606-1669)
Rembrandt van Rijn
— Noun
– English
～ influential Dutch artist (1606-1669)