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disease
Science; General science
A deleterious set of responses which occurs at the subcellular level, stimulated by some injury, and which is often manifested in altered structure or functioning of the affected ...
nutmeg
Science; General science
A delicately flavored spice obtained from the nutmeg tree ( Myristica fragrans ), a native of the Moluccas, or Spice Islands. The tree is a dark-leafed evergreen 30–60 ft (9–18 ...
aberration
Science; General science
A departure of an optical image-forming system from ideal behavior. Ideally, such a system will produce a unique image point corresponding to each object point. In addition, ...
oolite
Science; General science
A deposit containing spheroidal grains with a mineral cortex, most commonly calcite or aragonite, accreted around a nucleus formed primarily of shell fragments or quartz grains. ...
delta
Science; General science
A deposit of sediment at the mouth of a river or tidal inlet. The name, from the Greek letter Δ, was first used by Herodotus (fifth century B.C. ) for the triangular delta of ...
cyanocarbon
Science; General science
A derivative of hydrocarbon in which all of the hydrogen atoms are replaced by the –C≡N group. Only two cyanocarbons, dicyanoacetylene and dicyanobutadiyne, were known before ...
isocyanate
Science; General science
A derivative of isocyanic acid. Isocyanates are represented by the general formula R–N=C=O, where R is predominantly alkyl or aryl; however, stable isocyanates in which ...
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