SINCE 1828
B-DNA
noun
\ ˈbē-ˌdē-ˌen-ˈā
\
\
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
Comments on B-DNA
What made you want to look up B-DNA? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Time Traveler Quiz: Which Word Came First?
-
- Which came first?
Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
Time Traveler Quiz: Which Word Came First?
Which word entered the English language first?
Take the quiz -
Slippery Words Quiz—Changing with the Times
Do you know these earlier meanings of words?
Take the quiz -
Name That Thing
Test your visual vocabulary with our 10-question challenge!
Take the quiz -
SCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share B-DNA
Resources for B-DNA