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Index (A)

AA - AB

AC - AC

AD - AF

AG - AJ

AK - AM

AN - AN

AO - AR

AS - AV

AW - AZ

Moment of truth
As at 2005, the major source of antioxidants in the US diet is coffee, followed by tea, bananas and dried beans.


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axon Zool.
Portion of nerve cell or neurone which transmits an electrical impulse signal away from the cell.

azeotrope Chem.
A mixture of two liquids that boils at constant composition. This means that the proportion composition of the constituents in liquid and vapor phases is the same. Initially, when a mixture is boiled, the vapor contains a higher proportion of the more volatile component which can subsequently be fractionally distilled off. Eventually, the proportion of this component presents in the liquid falls to a point whereby the vapor contains the same amount of composition mixture. The composition of an azeotrope depends on the pressure. It is also called azeotropic mixture or constant-boiling mixture. For example, the azeotropic mixture of benzene and water boils at 69.3C with mole fraction of water as 0.3.

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