Z-Twist is a term used to describe a right-handed twisted yarn, in contrast to S-Twist.
Zeitgeist movement is a term used to describe the general intellectual, ethical, cultural, and moral state of thinking and acting during a particular era.
ZEITGEIST MOVEMENT ILLUSTRATION
Zero population growth (ZPG) is a term used to describe a condition in which births and immigration in a population just balance deaths and emigration.
The first Jean with zip fly was the Lee 101 also named the cowboy Jean introduced in 1926 by Lee.