spirochete

Scanning electron micrograph of the spirochete Treponema pallidum attached to testicular …ASM/Science Source
Take a 3-minute break and test your skills!
April 01, 2015
diapause Hear it
a period of physiological dormancy
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears