S factor
Also found in: Medical.
S factor
[′es ‚fak·tər] (ordnance)
The deflection change in mils required to keep the burst on the observer target line when the range is changed 100 yards (91.44 meters) along that line.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.