SINCE 1828
dictionary
thesaurus

B-DNA

noun
Save Word
\ ˈbē-ˌdē-ˌen-ˈā How to pronounce B-DNA (audio) \

Medical Definition of B-DNA

: the typical form of double helix DNA in which the chains twist up and to the right around the front of the axis of the helix — compare z-dna

Learn More About B-DNA

Dictionary Entries Near B-DNA

bdellovibrio

B-DNA

BDNF

See More Nearby Entries 

Cite this Entry

“B-DNA.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/B-DNA. Accessed 13 Aug. 2022.

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

WORD OF THE DAY

carceral

Listen to the pronunciation of carceral

See Definitions and Examples »

Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!

Words at Play
Ask the Editors
Word Games