1) Abbreviation on a skivvy 2) Gyrene initials 3) Hattiesburg sch 4) Leathernecks, initially 5) United States Mail 6) United States Marines 7) United States Mint 
Ultrasonic Motor. An autofocus motor (Canon brand lenses).
USM may stand for: ==Universities== == See also == ...
Universal Subscription Mechanism. Allows certain podcatchers to automatically add a subscription from an RSS file.
( Unsharp Mask ) The term comes from a conventional colour separation camera technique that uses a unsharp photographic mask to increase contrast between light and dark areas of the reproduction and gives the illusion of sharpness
( Unsharp Mask ) The term comes from a conventional colour separation camera technique that uses a unsharp photographic mask to increase contrast between light and dark areas of the reproduction and gives the illusion of sharpness. 
USM (Ultra Sonic Motor) is a Canon devised Autofocus SLR lens motor system. USM lenses are usually quicker to focus, more compact, with greater operational simplicity and virtually silent compared to their earlier 'Arc Form Drive'(AFD) cousins. USM lenses only work with the Canon 'EOS' camera system, introduced in March 1987. (see SLR & EOS)
Shares which are traded on the Unlisted Securities Market.
United States Mail. · United States Marines. · United States Mint.