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Rhumb Line
- a line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction
- a line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction
Rhumb
- a line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction
- any of the thirty-two points of a compass
Rhumbs
- a line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction
- any of the thirty-two points of a compass
Right Ascension
- (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; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere; "one hour of right ascension equals fifteen degrees"
- an arc of the celestial equator eastward from the vernal equinox
- (astronomy) the angular distance eastward along the celestial equator from the vernal equinox to the intersection of the hour circle that passes through the body; expressed in hours and minutes and second; used with declination to specify positions on the
RA
- (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; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere; "one hour of right ascension equals fifteen degrees"
- an intensely radioactive metallic element that occurs in minute amounts in uranium ores
Roadstead
- a partly sheltered anchorage
Roadsteads
- a partly sheltered anchorage
Resort Area
- an area where many people go for recreation
- an area where many people go for recreation
Roughs
- the part of a golf course bordering the fairway where the grass is not cut short
- prepare in preliminary or sketchy form
Rookeries
- a breeding ground for gregarious birds (such as rooks)