| ROUGHRIDER | • roughrider n. A horsebreaker. • roughrider n. (Military, dated) A noncommissioned officer in the British cavalry whose duty is to assist the riding master. • roughrider n. (Capitalized) A team member for the Canadian Football League’s Saskatchewan Roughriders. |
| RUTHERFORD | • rutherford n. An obsolete unit of radioactivity (symbol: rd), defined as the activity of a quantity of radioactive… • Rutherford prop.n. A Scottish habitational surname from Old English from a place where there was once a settlement in the… • Rutherford prop.n. (Rare) A male given name transferred from the surname. |
| HYDRARGYRUM | • hydrargyrum n. (Chemistry, medicine) Mercury (chemical element). • HYDRARGYRUM n. an obsolete name for mercury. |
| ROUGHRIDERS | • roughriders n. Plural of roughrider. • rough␣riders n. Plural of rough rider. • ROUGHRIDER n. a rider of untrained horses; a horse-breaker. |
| RUTHERFORDS | • rutherfords n. Plural of rutherford. • RUTHERFORD n. a unit of radioactive decay equal to 1 million disintegrations per second. |
| HYDRARGYRUMS | • HYDRARGYRUM n. an obsolete name for mercury. |
| HYPERPRODUCER | • hyperproducer n. That which hyperproduces. • HYPERPRODUCER n. an agent causing hyperproduction. |
| RUTHERFORDIUM | • rutherfordium n. A transuranic chemical element (symbol Rf) with an atomic number of 104. • rutherfordium n. (Obsolete) A rejected name for seaborgium. • rutherfordium n. (Obsolete) A rejected name for lawrencium. |
| HYPERPRODUCERS | • hyperproducers n. Plural of hyperproducer. • HYPERPRODUCER n. an agent causing hyperproduction. |
| RUTHERFORDIUMS | • RUTHERFORDIUM n. an artificially produced radioactive transuranic element. |
| TETRAHYDROFURAN | • tetrahydrofuran n. (Organic chemistry) A heterocyclic ether having a five-membered ring with four carbon atoms and one… • TETRAHYDROFURAN n. a flammable liquid ether derived from furan and used as a solvent and as an intermediate in organic synthesis. |