[Greekkīnētikos, fromkīnētos,moving, fromkīnein,to move; seekeiə-inIndo-European roots.] ki·net′i·cal·lyadv. American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt...