Definition of "transonic" []

• Of or relating to aerodynamic flow or flight conditions at speeds near the speed of sound. (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.

• "Bullets become unstable when they travel through the "transonic" stage (where the bullet goes from being supersonic to subsonic) the reason for this as best as I understand is due to the change in the way the air flows over the grooves in the bullet that the rifling engraves in its surface."
• "The 'transonic' stage of a 7mm Weatherby is at about 1400 yards, a 30-06 at about 1200 yards, and my old slowpoke .35 Whelen is at 700 yards."
• "If bullets become unstable when they travel through the "transonic" stage, then why do 22 long rifle are still flying true even at 600 yards!!!"