thymine

noun thy·mine \ˈthī-ˌmēn\

Medical Definition of THYMINE

: a pyrimidine base C₅H₆N₂O₂ that is one of the four bases coding genetic information in the polynucleotide chain of DNA—compare adenine, cytosine, guanine, uracil

Illustration of THYMINE

Learn More About

Dictionary: Definition of "thymine"

Browse

Seen & Heard

What made you want to look up thymine? Please tell us where you read or heard it (including the quote, if possible).

View Seen & Heard Highlights from Around the Site

Test Your Vocabulary!

10 Charming Words for Nasty People

Put-downs with flair

Learn More

When "Literally" isn't, well, literal

How to use a word that (literally) drives some people nuts.

Watch Now

Know what this is?

Test your vocab with our fun, fast game

Go Play

Fear of cats?

Ailurophobia, and 9 other unusual fears

Learn More