an unstable negatively charged elementary particle, classified as a baryon, that has a mass 3273 times that of the electron
GMTRead more in this article about some frequently asked questions and fun facts related to our definitions.
What Are En Dashes?You don’t hear as much about them as other dashes, but you’ve most likely seen them around. En dashes (–) can denote a range or connect the endpoints of a route. They can also show a contrast or connection between two words. You can use them to replace the words to, and, or versus. An en dash is longer than a hyphen (–) and shorter …