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aeromonas
Science; General science
A bacterial genus in the family Vibrionaceae comprising oxidase-positive, facultatively anaerobic, monotrichously flagellated gram-negative rods. The mesophilic species are A. ...
dam
Science; General science
A barrier or structure across a stream, river, or waterway for the purpose of confining and controlling the flow of water. Dams vary in size from small earth embankments for farm ...
frame of reference
Science; General science
A base to which to refer physical events. A physical event occurs at a point in space and at an instant of time. Each reference frame must have an observer to record events, as ...
azurite
Science; General science
A basic carbonate of copper with the chemical formula Cu 3 (OH) 2 (CO 3 ) 2 . Azurite is normally associated with copper ores and often occurs with malachite. Azurite is ...
four-bar linkage
Science; General science
A basic linkage mechanism used in machinery and mechanical equipment. The term has been applied to three types of linkages: plane, spherical, and skew.
hardy-weinberg formula
Science; General science
A basic mathematical relation used in population genetics. It gives the proportion of the various genotypes in a randomly mating population in terms of the frequencies of the ...
electric charge
Science; General science
A basic property of elementary particles of matter. One does not define charge but takes it as a basic experimental quantity and defines other quantities in terms of it. The ...
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