• synonyms


[ tĕrĭ-dēn′ ]

Any of a group of organic compounds having two fused six-member rings each containing two nitrogen atoms and four carbon atoms. One of the rings is a pyrimidine, the other a pyrazine. Pteridines include folic acid and the pigments of butterfly wings.

Nearby words

ptc, ptca, pte, pter-, pteranodon, pteridine, pterido-, pteridology, pteridophyte, pteridosperm, pterion
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.