How to pronounce “pyrolysis” in English

So as the wood breaks down and the heat of that fire undergoes pyrolysis, it releases lots of gases, and vapors, and smoke, which is itself combustible.

And we will detect things that we otherwise would just incinerate if we have to do pyrolysis and heat it up.

where the oxygen's being drawn in and igniting all those producer gases coming off from the wood as it undergoes pyrolysis and gives off