[ woo lf; French vawlf ]
/ wʊlf; French vɔlf /
a number indicating the degree of sunspot activity on the sun as a factor of observer idiosyncrasies, the number of sunspot groups, and the number of individual sunspots.
Why Veterans Day And The Number 11 Are Tied TogetherNovember 11th is the 315th day of the year (except on leap years). It’s also Veterans Day, a federal holiday honoring all military veterans.
Why Is “Dog” One Of The Great Mysteries Of The English Language?Behind the simplest words one can often find the most compelling questions. Take for example, “dog.” Canis familiaris, also known as “dog,” is essentially a domesticated wolf. The dog is a member of the Canidae family, like the jackal and the fox. The history of dog About seven centuries ago, the word “hound,” which came from the Old English hund, was the word for all domestic …
Origin of Wolf number
1975–80; after Rudolf Wolf (1816–93), Swiss astronomer
Also called relative sunspot number, sunspot number.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019