jamproof

[ jam-proof ]

adjective

1. built so as to prevent jamming: jam:

   a jamproof copying machine.

Word History and Origins

Origin of jamproof¹

jam ¹ + -proof

Example Sentences

In 1941, when she co-invented a jamproof radio guidance system for torpedoes at the age of 27, the New York Times wrote, “So vital is her discovery to national defense that government officials will not allow publication of its details.”

From BusinessWeek

Almost as powerful as the standard .22-caliber rifle, the weapon is nearly recoilless, virtually jamproof, and fires bullets without cartridges, primer charge or powder.

From Time Magazine Archive

A jamproof slide fastener, called "Conmatic." was brought out by Conmar Products Corp.

From Time Magazine Archive