(Encyclopedia) phenylketonuriaphenylketonuriafĕnˌəlkētˌən&oobreve;rˈēə [key] (PKU), inherited metabolic disorder caused by a deficiency in a specific enzyme (phenylalanine hydroxylase). The…
(Encyclopedia) biennial, plant requiring two years to complete its life cycle, as distinguished from an annual or a perennial. In the first year a biennial usually produces a rosette of leaves (e.g…
(Encyclopedia) potentiometer. 1 Manually adjustable, variable, electrical resistor. It has a resistance element that is attached to the circuit by three contacts, or terminals. The ends of the…
(Encyclopedia) blood substitute, substance that mimics the function of blood. Blood substitutes typically concentrate only on reproducing the function of hemoglobin, the molecule that carries oxygen…
(Encyclopedia) bluebird, common name for a North American migratory bird of the family Turdidae (thrush family). The eastern bluebird, Sialia sialis, is among the first spring arrivals in the North.…
(Encyclopedia) cataract, in medicine, opacity of the lens of the eye, which impairs vision. In the young, cataracts are generally congenital or hereditary; later they are usually the result of…
(Encyclopedia) HoseaHoseahōzēˈə, –zāˈə [key], prophetic book of the Bible. It relates something of the career of the prophet Hosea who preached against the sins of the northern kingdom of Israel in…
(Encyclopedia) AntiopeAntiopeăntīˈəpē [key], in Greek mythology. 1 Theban princess, daughter of Nycteus. She was seduced by Zeus and bore him twin sons, Zethus and Amphion. Fleeing to Sicyon to…
(Encyclopedia) Flacius Illyricus, MatthiasFlacius Illyricus, Matthiasməthīˈəs flāˈshəs ĭlĭrˈĭkəs [key], 1520–75, German Lutheran reformer, whose original name was Matthias Vlachich or Francowich, b.…
(Encyclopedia) Francia, José Gaspar RodríguezFrancia, José Gaspar Rodríguezhōsāˈ gäspärˈ rōᵺrēˈgās fränˈsyä [key], 1766–1840, dictator of Paraguay and creator of its national independence, known as…
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