Wiktionary
catalyzer
n. That which catalyzes.
Usage examples of "catalyzer".
With the catalyzer, I place the discriminator under your conscious control.
The catalyzer is analogous to the flashlight an oculist shines in your eye, testing, not destroying vision.
Part of the attack was doping the last batch of fuel catalyzer with some sort of stuff that causes the fuel to jell.