|
|
red giant star |
Noun
|
a large, old, luminous star |
|
|
relaxer |
Noun
|
any agent that produces relaxation |
|
|
relict |
Noun
|
geological feature that is a remnant of a pre-existing formation after other parts have disappeared |
|
|
relict |
Noun
|
an organism or species surviving as a remnant of an otherwise extinct flora or fauna in an environment much changed from that in which it originated |
|
|
repressor |
Noun
|
an agent that represses |
|
|
represser |
Noun
|
an agent that represses |
|
|
restriction fragment |
Noun
|
the fragment of DNA that is produced by cleaving DNA with a restriction enzyme |
|
|
retardant |
Noun
|
any agent that retards or delays or hinders |
|
|
retardent |
Noun
|
any agent that retards or delays or hinders |
|
|
ridgeline |
Noun
|
a long narrow range of hills |
|
|
rift valley |
Noun
|
a valley with steep sides |
|
|
rill |
Noun
|
a small channel, as one formed by soil erosion |
|
|
rill |
Noun
|
a small stream |
|
|
riparian forest |
Noun
|
woodlands along the banks of stream or river |
|
|
ripple mark |
Noun
|
one of a series of small ridges produced in sand by water currents or by wind |
|
|
river |
Noun
|
a large natural stream of water |
|
|
riverbank |
Noun
|
the bank of a river |
|
|
riverside |
Noun
|
the bank of a river |
|
|
riverbed |
Noun
|
a channel occupied (or formerly occupied) by a river |
|
|
river bottom |
Noun
|
a channel occupied (or formerly occupied) by a river |
|
|
rivulet |
Noun
|
a small stream |
|
|
runnel |
Noun
|
a small stream |
|
|
rabbit burrow |
Noun
|
a hole in the ground as a nest made by wild rabbits |
|
|
rabbit hole |
Noun
|
a hole in the ground as a nest made by wild rabbits |
|
|
radio source |
Noun
|
an object that radiates radio waves |
|
|
range of mountains |
Noun
|
a series of hills or mountains |
|
|
rangeland |
Noun
|
land suitable for grazing livestock |
|
|
ravine |
Noun
|
a deep narrow steep-sided valley, especially one formed by running water |
|
|
red dwarf |
Noun
|
a small, old, relatively cool star |
|
|
reverse fault |
Noun
|
a geological fault in which the upper side appears to have been pushed upward by compression |
|
|
roc |
Noun
|
mythical bird of prey having enormous size and strength |
|
|
Rip van Winkle |
Noun
|
a person who sleeps a lot |
|
|
Rip van Winkle |
Noun
|
a person oblivious to social changes |
|
|
religious person |
Noun
|
a person who manifests devotion to a deity |
|
|
religionist |
Noun
|
a person addicted to religion or a religious zealot |
|
|
red man |
Noun
|
offensive term for Native Americans |
|
|
role player |
Noun
|
a theatrical performer |
|
|
role player |
Noun
|
a person who makes deceitful pretenses |
|
|
raiser |
Noun
|
someone concerned with the science or art or business of cultivating the soil |
|
|
raiser |
Noun
|
a bridge partner who increases the partner's bid |
|
|
rappeller |
Noun
|
a person who descends down a nearly vertical face by using a doubled rope that is wrapped around the body and attached to some high point |
|
|
registered representative |
Noun
|
someone in charge of a client's account for an advertising agency or brokerage or other service business |
|
|
resister |
Noun
|
someone who offers opposition |
|
|
resister |
Noun
|
someone who systematically obstructs some action that others want to take |
|
|
raconteur |
Noun
|
a person skilled in telling anecdotes |
|
|
retaliator |
Noun
|
someone who takes vengeance |
|
|
ruffian |
Noun
|
a cruel and brutal fellow |
|
|
roughneck |
Noun
|
a cruel and brutal fellow |
|
|
ranger |
Noun
|
a member of a military unit trained as shock troops for hit-and-run raids |
|
|
ranger |
Noun
|
an official who is responsible for managing and protecting an area of forest |