What is a catalyst but is not a biologicl catalyst?

A Catalyst makes a chemical reaction proceed faster, but is not used up by the reaction.

A catalyst is a substance that makes chemical reactions happen faster. They don't affect the outcome of the reaction, only the time in which it happens.

We became catalyst when we visit to in-laws home.

In chemistry it is called a catalyst. In biology it is called a enzyme. When a living organism produces a catalyst its called an enzyme.

A catalyst is a substance that speeds up a given chemical reaction by lowering its activation energy without itself being used up.