Try Our Apps
The saddest words
, Also called
a comparison of two or more versions of a web page or app in simultaneous use to assess which is the optimized version for achieving a specified design goal or performance metric.
an experiment that compares two or more versions of a product or strategy to determine empirically which version is superior:
The A/B test showed a more positive customer response to email marketing with short subject lines.
verb (used with object)
to subject (a website, app, product, or strategy) to a comparison of two or more versions in simultaneous use to assess which is the optimized version for achieving a specified design goal or performance metric.
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Discover our greatest slideshows
15 Writers on Heartbreak and...
14 Quotes for Daily Inspiration
15 Powerful Quotes about Language
All in One Basket: 8 Eggcentric...
Browse more topics on our blog
What Is the Difference Between Discreet and Discrete?
Learn the correct uses of these two commonly confused homophones.
What Character Was Removed from the Alphabet?
What mistaken pronunciation gave this character its name?
This small mark has two primary uses: to signify possession or omitted letters.
How Do I Get a Word into the Dictionary?
People invent new words all the time, but which ones actually make it?
Word of the Day
Word Value for
Words With Friends
Nearby words for a/b test