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thymidine vs. thymine

[ thahy-mi-deen ]
noun
  1. a nucleoside, C10H14N2O5, containing thymine and deoxyribose, that is a constituent of DNA.
[ thahy-meen, -min ]
noun
  1. a pyrimidine base, C5H6N2O2, that is one of the principal components of DNA, in which it is paired with adenine. Symbol: T

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