Dictionary.com
Thesaurus.com

thymidine vs. thymine

[thahy-mi-deen] / ˈθaɪ mɪˌdin /

noun

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

[thahy-meen, -min] / ˈθaɪ min, -mɪn /

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