Relating to or describing lactic acid that rotates polarized light to the right.
From dextro- 'right' and lactic 'relating to milk,' combining Latin origins. The term distinguishes right-rotating from left-rotating lactic acid isomers.
Your muscles produce lactic acid when they work hard, but there are two mirror-image versions of it—dextrolactic acid is the right-handed one, and it's what your body actually uses!
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