It's a noun in CG/VFX. "Can we change the Fresnel to get less reflection?" "No, it's a physically-based renderer - change the IOR" "but, that'll change the r

It's a noun in CG/VFX. "Can we change the Fresnel to get less reflection?" "No, it's a physically-based renderer - change the IOR" "but, that'll change the refraction angle..." "Yep, split them into AOVs, and let comp deal with it."