You searched for: “rubescence
rubescence (s) (noun), rubescences (pl)
A condition of being reddish, or a process of blushing: "The rubescence that spread across the sky at sunset was spectacular."

"When Mark stumbled and fell down, he had a rubescence on his face because he was so embarrassed."

This entry is located in the following units: -esce, -escent, -escence (page 9) rub-, rubi- (page 1)