A circadian rhythm is any biological process that displays an endogenous, entrainable oscillation of about 24 hours.
The MG ZT is an automobile which was produced by MG Rover from 2001 to 2005.
The tesla (symbol T) is a derived unit of magnetic flux density (informally, magnetic field strength) in the International System of Units.
The Zimmer Twins is a Canadian animated series and website.
A zero-tolerance policy is one which imposes strict punishment for infractions of a stated rule, with the intention of eliminating undesirable conduct.
Zero Tolerance is a 1994 video game developed by Technopop and published by Accolade exclusively for the Sega Mega Drive/Genesis video game console.
Zero Tolerance Knives (ZT Knives) is a knife brand of Kai USA, headquartered in Tualatin, Oregon, United States.
A zero-turn riding lawn mower (colloquially, a z-turn) is a standard riding lawn mower with a turning radius that is effectively zero.
Zolpidem, sold under the brand name Ambien, among others, is a sedative primarily used for the treatment of trouble sleeping.
Zoo Tycoon is a series of business simulation video games.