Several hundred chemical compounds

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• Vanillin — IUPAC name …   Wikipedia

• essential oil — any of a class of volatile oils obtained from plants, possessing the odor and other characteristic properties of the plant, used chiefly in the manufacture of perfumes, flavors, and pharmaceuticals. [1665 75] * * * Any of a class of highly… …   Universalium

• bitter principle — noun any one of several hundred compounds having a bitter taste; not admitting of chemical classification • Hypernyms: ↑compound, ↑chemical compound * * * noun : any of various neutral substances of strong bitter taste (as aloin) extracted from… …   Useful english dictionary

• bitter principle — Chem. any of several hundred natural compounds, usually of vegetable origin, having a bitter taste, and not admitting of any chemical classification. [1930 35] * * * …   Universalium

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium