Advertisement

Dictionary


ac'tive sun'



Astron.
1. the sun at a maximum of solar activity, occurring every 11 years.
2. solar activity, superimposed on an unchanging background. Cf. quiet sun, solar cycle.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

active siteactive transport

Related Content


Advertisement

Play Hangman

Play Poptropica

Play Same Game

Try Our Math Flashcards