What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
Relating to, involving, or utilizing the property of certain amorphous semiconductors of making a rapid, reversible transition from a non-conducting to a conducting state on the application of an electric field above a threshold value (the Ovshinsky effect).
1960s; earliest use found in Electronics. From ov- + -onic.