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单词	acid radical
释义	acid radical noun 1 : the negative ion (as the sulfate ion SO4−−) of an acid : anion —now used especially by analysts 2 : a radical formed by removal of all hydroxyl or analogous groups (as mercapto) from an acid benzoyl C6H5CO− is the acid radical corresponding to benzoic acid C6H5COOH sulfuryl >SO2 is the acid radical of sulfuric acid H2SO4 compare acyl Word History First Known Use 1788, in the meaning defined at sense 1
随便看	Black Hills beetle Black Hills spruce black hole black holes black Hollander black horehound black horse black house black huckleberry black humor black humorist black huron black hurts black ice Black Independence Day black Indian hemp black ink black ipecac black ironwood black Italian poplar black ivory black jew black jewfish black kale black kernel

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