二
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二；两
A prefix, signifying twofold, double, twice；denoting two atoms, radicals, groups, or equivalents, as the；case may be. See Bi-, 2.；A prefix denoting through; also, between, apart, asunder,；across. Before a vowel dia-becomes di-; as, diactinic; dielectric, etc.
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二；两
A prefix, signifying twofold, double, twice；denoting two atoms, radicals, groups, or equivalents, as the；case may be. See Bi-, 2.；A prefix denoting through; also, between, apart, asunder,；across. Before a vowel dia-becomes di-; as, diactinic; dielectric, etc.
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Dictionary facts from ECDICT.