Alizarin crimson
a pigment used in painting, derived from anthraquinone and characterized by its red color and transparency.
historical examples
alizarin crimson is a permanent crimson with a coal-tar origin.
illumination and its development in the present day sidney farnsworth
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the universal solvent sought by the alchemists. historical examples these preparations now prevented claes from thinking, for the time being, of the alkahest. the alkahest honore de balzac it was the only moment for sixteen long years when balthazar forgot the alkahest. the alkahest honore de balzac alkahest, alcahest, al′ka-hest, n. the universal solvent of […]
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abnormal alkalinity of the blood. alkalemia al·ka·le·mi·a (āl’kə-lē’mē-ə) n. a decrease in hydrogen-ion concentration of the blood or a rise in ph.
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tending to become alkaline; slightly alkaline. alkalescent al·ka·les·cent (āl’kə-lěs’ənt) adj. becoming alkaline; slightly alkaline.
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chemistry. any of various bases, the hydroxides of the alkali metals and of ammonium, that neutralize acids to form salts and turn red litmus paper blue. any of various other more or less active bases, as calcium hydroxide. (not in technical use) an . obsolete. any of various other compounds, as the carbonates of sodium […]