Not characterized by a dipole: a nonpolar covalent bond. (adjective)
Not ionizing when dissolved in water.(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 "nonpolar" in a sentence
"But nonpolar substances are effective solvents for one another; to put it in other words, nonpolar substances dissolve in other nonpolar substances."
"Because these mountains encompass the largest nonpolar ice mass in the world — some 46,298 glaciers covering 17 percent of the area's land mass — the region is known as the "third pole.""
"Most laboratories store chemicals in dimethyl sulfoxide (DMSO), a popular solvent that can dissolve both polar (i.e., miscible with water) and nonpolar compounds."