Z-DNA

noun
\ ˈzē- How to pronounce Z-DNA (audio) \

Medical Definition of Z-DNA

: the left-handed uncommon form of double helix DNA in which the chains twist up and to the left around the front of the axis of the helix and which has 12 base pairs in each helical turn and one groove on the external surface — compare b-dna

Learn More About Z-DNA

Dictionary Entries Near Z-DNA

Zantac

Z-DNA

ZDV

See More Nearby Entries 

Cite this Entry

“Z-DNA.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Z-DNA. Accessed 3 Jul. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Great Words for Scrabble

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!