any elastic wave traveling through the material of the earth, as a wave caused by an earthquake.
When to Capitalize “Earth”
When it comes to writing, this common English word confuses many native speakers who aren’t sure whether to use Earth or earth. Why is this an issue? Earth can be either a proper noun or a common noun. In English, proper nouns (nouns which signify a particular person, place, or thing) are capitalized. Following this rule, when Earth is discussed as a specific planet or …
Why Are We Calling Everything A “Wave”?
Why have so many waves found their way into our cultural lexicon in recent years? In this article, the first in the column Mincing Metaphors, we unpack this oceanic metaphor to better understand what it means and why it’s proving so useful right now.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019