acidic

(thing) by BaronWR Fri Jun 15 2001 at 17:45:56
An acidic substance is a substance that has a high concentration of free protons, or positive hydrogen ions. This is reflected in the pH scale, which is a measure of the concentration of positive Hydrogen ions.
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(definition) by Webster 1913 Tue Dec 21 1999 at 21:37:33

A*cid"ic (#), a. Min.

Containing a high percentage of silica; -- opposed to basic.

an acidic solution. -->

 

© Webster 1913.

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