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Barnard's star
(Encyclopedia) Barnard's star, star with the largest observed proper motion (rate of motion across the sky with respect to other stars); located in the constellation Ophiuchus. The star's large…prostaglandin
(Encyclopedia) prostaglandinprostaglandinprŏsˌtəglănˈdən [key], any of a group of about a dozen compounds synthesized from fatty acids in mammals as well as in lower animals. Prostaglandins are…inductance
(Encyclopedia) inductance, quantity that measures the electromagnetic induction of an electric circuit component; it is a property of the component itself rather than of the circuit as a whole. The…luminosity
(Encyclopedia) luminosity, in astronomy, the rate at which energy of all types is radiated by an object in all directions. A star's luminosity depends on its size and its temperature, varying as the…local area network
(Encyclopedia) local area network (LAN), a computer network dedicated to sharing data among several single-user workstations or personal computers, each of which is called a node. A LAN can have from…pacemaker, artificial
(Encyclopedia) pacemaker, artificial, device used to stimulate a rhythmic heartbeat by means of electrical impulses. Implanted in the body when the heart's own electrical conduction system (natural…aerobics
(Encyclopedia) aerobicsaerobicsârōˈbiks [key], [Gr.,=with oxygen], system of endurance exercises that promote cardiovascular fitness by producing and sustaining an elevated heart rate for a prolonged…typhoid fever
(Encyclopedia) typhoid fever acute, generalized infection caused by Salmonella typhi. The main sources of infection are contaminated water or milk and, especially in urban communities, food handlers…zakat
(Encyclopedia) zakatzakatzə-kätˈ [key] [Arab.,=purification], Islamic religious tax, one of the five basic requirements (arkan or “pillars”) of Islam. All adult Muslims of sound mind and body with a…insurance
(Encyclopedia) insurance or assurance, device for indemnifying or guaranteeing an individual against loss. Reimbursement is made from a fund to which many individuals exposed to the same risk have…Trending
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