ACID [as-id] What it is: Substances with a pH value less than 7. The opposite of alkaline. VIDEOS RELATED TO THIS TERMTap into the Wise & Powerful Part of YouHazel Dixon Nails HD OneNail Tip Application LEARN MORE TERMSACRYLIC PAINTSRHINESTONESPH VALUEHOLOGRAPHICDIAMOND E-FILE BITSCHROME POWDERCURING LAMPFRENCH FADECUTICLENAIL ENHANCEMENTENAMELAUTOCLAVEDIP SYSTEMMONOCHROMATICMOLDINGPARONYCHIAACRYLIC NAILSSIDEWALLCHEMICAL REACTIONDISTAL NAIL PLATE PrevNext