Of, relating to, or consisting of stars.(adjective)
Of or relating to a star performer.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "stellar" in a sentence
"As being consistent with the unit of distance, I have proposed for the stellar unit of time a _stellar year_"
"Ms. Warren, who lured Mr. Cordray to the CFPB, threw her support behind what she called a "stellar" choice."
"Under these circumstances, at the present time, which we referred to as a stellar moment of the revolution, we are commemorating Peasants Day."