Try Our Apps
7 Cycling Words
human T-cell lymphotropic virus type 1: a type of retrovirus that causes a rare form of leukemia, primarily occurring in southern Japan and the Caribbean islands.
Based on the Random House Dictionary, © Random House, Inc. 2016.
Cite This Source
Discover our greatest slideshows
Six words that can ruin your...
The Origins of 8 Classic Summer...
Globetrotter's Glossary: 8 Travel...
Eight Election Words That Will Fit...
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
Difficulty index for
Few English speakers likely know this word
Word Value for
Words With Friends
human T-cell lymphotropic virus type 1
Nearby words for htlv-1