thymidine vs. thymine

noun

Biochemistry.
  1. a nucleoside, C 10 H 14 N 2 O 5 , containing thymine and deoxyribose, that is a constituent of DNA.


noun

Biochemistry.
  1. a pyrimidine base, C 5 H 6 N 2 O 2 , that is one of the principal components of DNA, in which it is paired with adenine. : T