Acidic meaning

ə-sĭdĭk
(chemistry) Having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red.
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(mineralogy) Containing a high percentage of silica; opposed to basic.
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Of or relating to acid; having the character of an acid.

An acidic solution.

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Acid.
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Tending to form an acid.
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Acid.
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Designating or of igneous rocks with more than 66% silica.
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