solar cell

When sunlight strikes a solar cell, an electron is freed by the photoelectric effect. The two …© Merriam-Webster Inc.
Take a 3-minute break and test your skills!
April 28, 2015
portmanteau Hear it
a word formed by the blending of words
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