facial deviation value; face score
Internet slang that humorously applies the academic concept of 偏差値 (deviation value) to rate facial attractiveness. A high score means good-looking. Often used in casual online conversations and social media.
See also: 偏差値
That actor's face score is way too high.
It's not good to judge people solely by their facial deviation value.
The original academic term for 'deviation value' used in exam rankings. 顔面偏差値 extends it humorously to facial attractiveness.
A modern coinage combining 顔面 (face) and 偏差値 (deviation value). The exact origin is uncertain, but it likely emerged from online communities as a playful metric for looks.