Thymidine

**Semantic type:** Nucleic Acid, Nucleoside, or Nucleotide|Pharmacologic Substance

**Definition:** A pyrimidine nucleoside that is composed of the pyrimidine base thymine attached to the sugar deoxyribose. As a constituent of DNA, thymidine pairs with adenine in the DNA double helix. (NCI04)

**Synonyms:** - 2'-Deoxythymidine - 2'-Deoxythymidine - DOXRIBTIMINE - DThyd - DThyd - Deoxythymidine - Deoxythymidine - Deoxythymidine - TdR - Thymidin - Thymidin - Thymidine Deoxyriboside - dT - thymidine