from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of less than audible frequency.
- adj. Having a speed less than that of sound in a designated medium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. having a frequency too low to be audible
- adj. less than the speed of sound (in the same medium, and at the same temperature and pressure)
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. (of speed) less than that of sound in a designated medium
Sorry, no etymologies found.
There are others however, that are on a par with the Winchester Ranger 147-grain subsonic, and these are the CCI Speer Gold Dot and the Federal HST.
There are standard pressure loads, so-called "subsonic" loads, and ultra fast, high pressure, +P and +P+ loads.
(I can't give an actual number as I have not kept track, but I was just dying for a place to use the word "subsonic" somewhere in this column.
The lower operational ceiling of the F-35 around 40,000 feet and its subsonic cruising speed means it will be at much higher risk in attempting to penetrate such heavily defended airspace.
Then it had to remain controllable and stable at subsonic, transonic, and supersonic speeds up to Mach 4 by mid-1942, ten years after development had started.
As the 22-year-old Blake croons "Limit to Your Love," a cover of Canadian indie chanteuse Feist, in comes an almost subsonic rumble - the kind you don't hear in your headphones so much as feel in your kidneys.
I am adding to 99explorer's good advice and confirming the Winchester Ranger 147 gr. subsonic.
Boeing is struggling right now to develop a new subsonic airliner, something they've been doing for nearly a century.
If it is a deflagration the explosion propagates at subsonic velocity, as opposed to a full fledge detonation where there is a supersonic shock front.
Reusable vehicles are more reliable than unmanned missiles in the subsonic regime, in the supersonic regime, and GD found the same is true in the hypersonic regime.