E = mc2
An equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c2 is the speed of light squared, or multiplied by itself. (See relativity.)
Word Trends: Ninnyhammer, Cyclone, ScionSome words, such as affect, metaphor, and irony, hold relatively steady in lookups at Dictionary.com regardless of what’s happening in pop culture, politics, or social media. Other words shift wildly in rank and volume, often as a ripple effect of a news item or event that has piqued people’s curiosity—we call those trending words. Here are few of our favorite trending words from the week of March 12–18. …
Why Are A, E, I, O, U, And Y Called “Vowels”?In elementary school, we all learned the vowels of the English language: A, E, I, O, U and sometimes Y. But, what makes a vowel a vowel?
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.