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printer

(Encyclopedia) printer, device that reproduces text, images, or other data from a computer, digital camera, smartphone, or the like on paper or another medium. Impact printers, which mostly have been…

aldehyde

(Encyclopedia) CE5 Aldehydes aldehydealdehydeălˈdəhīd [key] [alcohol + New Lat. dehydrogenatus=dehydrogenated], any of a class of organic compounds that contain the carbonyl group, &…

fuel cell

(Encyclopedia) fuel cell, electric cell in which the chemical energy from the oxidation of a gas fuel is converted directly to electrical energy in a continuous process (see oxidation and reduction…

calcite

(Encyclopedia) calcitecalcitekălˈsīt [key], very widely distributed mineral, commonly white or colorless, but appearing in a great variety of colors owing to impurities. Chemically it is calcium…

tense

(Encyclopedia) tense [O.Fr., from Lat.,=time], in the grammar of many languages, a category of time distinctions expressed by any conjugated form of a verb. In Latin inflection the tense of a verb is…

mercury, chemical element

(Encyclopedia) mercury or quicksilver [from the Roman god Mercury], metallic chemical element; symbol Hg [Lat. hydrargyrum=liquid silver]; at. no. 80; at. wt. 200.59; m.p. −38.842℃; b.p. 356.58℃; sp…

nucleosynthesis

(Encyclopedia) nucleosynthesis or nucleogenesis, in astronomy, production of all the chemical elements from the simplest element, hydrogen, by thermonuclear reactions within stars, supernovas, and in…

Missinaibi

(Encyclopedia) MissinaibiMissinaibimĭsĭnāˈbē [key], river, c.265 mi (430 km) long, rising in Missinaibi Lake, central Ont., Canada, and flowing N and NE to the Mattagami River, SW of Moosonee, to…

Merodach

(Encyclopedia) MerodachMerodachmĕrˈōdăk, mērōˈdăk [key], biblical form of the name of the god Marduk of Babylon.

earthenware

(Encyclopedia) earthenware, form of pottery fired at relatively low temperatures, so that the clay does not vitrify (become glassy), as do stoneware and porcelain clays. Occasionally, earthenware is…