Quaternary ammonium compound

(quarternary ammoium compound) - a family of chemical compounds applied to water to kill or prevent algae.

See quaternary ammonium compounds.

the leaves of the shrub Catha edulis which are chewed like tobacco or used to make tea; has the effect of a euphoric stimulant; "in Yemen kat is used daily by 85% of adults"

A pustule.

Quat is a program for generation of 3d fractal objects. These objects are Julia sets using quaternions. Features include calculation of usual images and stereo pair images for real 3d views, a user-specified true color palette for flexible coloring, 5 iteration formulas, and intersection planes to view the interior of the three-dimensional fractal.

To satiate; to satisfy.

A pimple. Also an insult (cuz no one likes to be called a pimple).

An annoying, worthless person.