rydberg unit
— Noun
– English
~ a wave number characteristic of the wave spectrum of each element
Revolutionary United Front
— Noun
– English
~ 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
— Noun
– English
~ (British informal) a provincial British university of relatively recent founding; distinguished from Oxford University and Cambridge University
run-up
— Noun
– English
~ a substantial increase over a relatively short period of time; "a runup in interest rates"; "market runups are followed by corrections"
rub up
— Noun
– English
~ a review that refreshes your memory; "I need a rub up on my Latin"
runner-up
— Noun
– English
~ the competitor who finishes second
runner-up finish
— Noun
– English
~ a finish in second place (as in a race)
run-up
— Noun
– English
~ the approach run during which an athlete gathers speed
raise up
— Verb
– English
~ change the arrangement or position of
rack up
— Verb
– English
~ supply a rack with feed for (horses or other animals)
rachet up
— Verb
– English
~ move by degrees in one direction only; "a ratcheting lopping tool"
rake up
— Verb
– English
~ bring to light; "He raked up the misdeeds of his predecessor"
rack up
— Verb
– English
~ gain points in a game; "The home team scored many times"; "He hit a home run"; "He hit .300 in the past season"
rack up
— Verb
– English
~ place in a rack; "rack pool balls"
ramp up
— Verb
– English
~ bolster or strengthen; "We worked up courage"; "build up confidence"; "ramp up security in the airports"
rack up
— Verb
– English
~ defeat thoroughly; "He mopped up the floor with his opponents"
rev up
— Verb
– English
~ speed up; "let's rev up production"
rev up
— Verb
– English
~ increase the number of rotations per minute; "rev up an engine"