Radiation sickness is a thing that can conceivably happen in my game. It's probably not a highly utilized mechanic, but you never know what GMs will want to introduce.

Either way there is mechanics for it.

What I'm struggling with is the naming convention.

The obvious dummy answer is RADs to measure how a character is affected by radiation because it sounds intuitive and most people will understand it from fallout games and such.

The problem is that RADs is a scientific thing (Radiation Absorbed Dose), AND it's outdated scientifically.

The more accurate and scientific version used by all medical and CBRNE personnel is mSv (milliseiverts). But mSv doesn't have quite the same ring to it.

I have committed to modelling all my stuff on the latest scientific material, but in this case it's functionally better to call it rads for the sake of cognitive load, but rads is also the wrong term explicitly.

How would you rectify this and why?

Edit:

Resolved after feedback:
Use condition term Irradiated, measure progression in RADs, make footnote that it's measured in game in milliseivers (mSv).