Street name for the high produced by abuse of the cough syrup Robitussin which contains dextromethorphan.
In statistics, a term applied to a test or procedure that is not seriously disturbed by violations of the assumptions on which it is based. For example, it was an “unexpected and robust difference in the rate of events.” (Dr. Harold J. Burstein, in The New England Journal of Medicine, Oct 9, 2003)
- Rock (drug)
A street name given to cocaine that has been processed from cocaine hydrochloride to a ready-to-use free base for smoking. Rather than requiring the more volatile method of processing cocaine using ether, rock cocaine (also called crack) is processed with ammonia or sodium bicarbonate (baking soda) and water and heated to remove the hydrochloride, thus […]
- Rocky Mountain spotted fever (RMSF)
An acute febrile (feverish) disease initially recognized in the Rocky Mountain states, caused by Rickettsia rickettsii transmitted by hard-shelled (ixodid) ticks. Occurs only in the Western Hemisphere. Anyone frequenting tick-infested areas is at risk for RMSF. The onset of symptoms is abrupt with headache, high fever, chills, muscle pain. and then a rash. The rickettsiae […]
- Rocky Mountain wood tick
A tick that can transmit R. rickettsii, the agent of Rocky Mountain spotted fever. This tick is found in the Rocky Mountain states and in southwestern Canada. The life cycle of this tick may require up to 2 to 3 years for completion. Adult ticks feed primarily on large mammals. Larvae and nymphs feed on […]
A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides side vision and the ability to see objects in dim light (night vision). By contrast, the cones are the retinal photoreceptors that provide sharp central vision and color vision.