Dictionary

All Word
rhumb line Noun a line on a sphere that cuts all meridians at the same angle
rhumb Noun a line on a sphere that cuts all meridians at the same angle
right ascension Noun (astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky
rice paddy Noun an irrigated or flooded field where rice is grown
roads Noun a partly sheltered anchorage
roadstead Noun a partly sheltered anchorage
resort area Noun an area where many people go for recreation
rooftop Noun the top of a usually flat roof
rookery Noun a breeding ground for gregarious birds, such as rooks
rural area Noun an area outside of cities and towns
restriction site Noun the specific sites at which a restriction enzyme will cleave DNA
right stage Noun the part of the stage on the actor's right as the actor faces the audience
rabbit warren Noun an overcrowded residential area
rabbit warren Noun a series of connected underground tunnels occupied by rabbits
rational motive Noun a motive that can be defended by reasoning or logical argument
renal calculus Noun a calculus formed in the kidney
rock outcrop Noun the part of a rock formation that appears above the surface of the surrounding land
rain cloud Noun a dark grey cloud bearing rain
red dwarf star Noun a small, old, relatively cool star
red giant Noun a large, old, luminous star
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