rydberg unit
— Navneord
– Engelsk
～ a wave number characteristic of the wave spectrum of each element
Revolutionary United Front
— Navneord
– Engelsk
～ a terrorist group formed in the 1980s in Sierra Leone; seeks to overthrow the government and gain control of the diamond producing regions; responsible for attacks on civilians and children, widespread torture and murder and using children to commit atrocities; sponsored by the president of Liberia
redbrick university
— Navneord
– Engelsk
～ (British informal) a provincial British university of relatively recent founding; distinguished from Oxford University and Cambridge University
rave-up
— Navneord
– Engelsk
～ a raucous gathering
run-up
— Navneord
– Engelsk
～ a substantial increase over a relatively short period of time; "a runup in interest rates"; "market runups are followed by corrections"
rub up
— Navneord
– Engelsk
～ a review that refreshes your memory; "I need a rub up on my Latin"
runner-up
— Navneord
– Engelsk
～ the competitor who finishes second
runner-up finish
— Navneord
– Engelsk
～ a finish in second place (as in a race)
run-up
— Navneord
– Engelsk
～ the approach run during which an athlete gathers speed
Richard Upjohn
— Navneord
– Engelsk
～ United States architect (born in England) (1802-1878)
re-uptake
— Navneord
– Engelsk
～ a process of using up or consuming again; "psychopharmacologists discovered that amine reuptake is a process that inactivates monoamine neurotransmitters"
radioactive iodine uptake test
— Navneord
– Engelsk
～ radioactive iodine test that measures the amount of radioactive iodine taken up by the thyroid gland
Rubus ursinus loganobaccus
— Navneord
– Engelsk
～ red-fruited bramble native from Oregon to Baja California
Rubus ursinus
— Navneord
– Engelsk
～ American blackberry with oblong black fruit