follow Dictionary.com

Today's Word of the Day means...

sunspot number

noun, Astronomy
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples for sunspot number
  • The long sunspot number record helps to characterize the solar cycle.
  • The yellow curve plots the change in solar sunspot number.
  • As the sunspot number increases, the number of days that have geomagnetic storms also rises.

Word of The Day

Difficulty index for sunspot number

Few English speakers likely know this word

Word Value for sunspot

9
12
Scrabble Words With Friends