Greek word
pyróō
πυρόω
What it means
to kindle, i.e. to be ignited, glow, be refined, or to be inflamed
to kindle, i.e. (passively) to be ignited, glow (literally), be refined (by implication), or (figuratively) to be inflamed (with anger, grief, lust)
Where it comes from
from pŷr (πῦρ)