Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

ab

play
noun \ˈab\

Medical Definition of ab

  1. :  abdominal—usually used in plural <highly developed abs> <ab exercises>




ab

abbreviation

Medical Definition of ab

  1. 1abort; abortion

  2. 2about




AB

play
noun \ˈā-ˈbē\

Medical Definition of AB

  1. :  the one of the four ABO blood groups characterized by the presence of antigens designated by the letters A and B and by the absence of antibodies against these antigens




AB

abbreviation

Medical Definition of AB

  1. 1aid to blind

  2. 2[Latin artium baccalaureus] bachelor of arts




ab-

prefix

Medical Definition of ab-

  1. :  from :  away :  off <aboral>




Learn More about ab


Seen and Heard

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

WORD OF THE DAY

February 9, 2016

marked by high spirits and laughter

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet pince-nez kittly-benders spindrift
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ