[algore]

Sounds like a chemical reaction.

[Kevmo]

There are known chemical reaction pathways. The heat being generated is quite a bit in excess of known chemical pathways — that’s why they regularly call it “Excess Heat”.

[Steely Tom]

It’s a nuclear reaction mediated (facilitated, or catalyzed) by chemical effects. That’s what makes it so interesting, at a scientific level (I mean, putting aside the commercial implications).

[alloysteel]

Dilithium crystals....