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Here are all the possible meanings and translations of the word tumbler. Princeton's WordNet(0.00 / 0 votes)Rate this definition: tumbler(noun) a gymnast who performs rolls and somersaults and twists etc. tumbler(noun) a glass with a flat bottom but no handle or stem; originally had a round bottom. tumbler(noun) a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown.
From Wikipedia, the free encyclopedia. A vortex mixer, or vortexer, is a simple device used commonly in laboratories to mix small vials of liquid. It consists of an electric motor with the drive shaft oriented vertically and attached to a cupped rubber piece mounted slightly off-center. As the motor runs the rubber piece oscillates rapidly in a circular motion. When a test tube or other appropriate container is pressed into the rubber cup (or touched to its edge) the motion is transmitted to the liquid inside and a vortex is created.